add licence

Author: PaulHancock

LICENCE.md

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+Licensed under the [Academic Free License](https://opensource.org/licenses/AFL-3.0) version 3.0
+
+1) Grant of Copyright License. Licensor grants You a worldwide, royalty-free, non-exclusive, sublicensable license, for the 
+duration of the copyright, to do the following:
+
+a) to reproduce the Original Work in copies, either alone or as part of a collective work;
+
+b) to translate, adapt, alter, transform, modify, or arrange the Original Work, thereby creating derivative works 
+("Derivative Works") based upon the Original Work;
+
+c) to distribute or communicate copies of the Original Work and Derivative Works to the public, under any license of your 
+choice that does not contradict the terms and conditions, including Licensor's reserved rights and remedies, in this 
+Academic Free License;
+
+d) to perform the Original Work publicly; and
+
+e) to display the Original Work publicly.
+
+2) Grant of Patent License. Licensor grants You a worldwide, royalty-free, non-exclusive, sublicensable license, under patent
+claims owned or controlled by the Licensor that are embodied in the Original Work as furnished by the Licensor, for the 
+duration of the patents, to make, use, sell, offer for sale, have made, and import the Original Work and Derivative Works.
+
+3) Grant of Source Code License. The term "Source Code" means the preferred form of the Original Work for making 
+modifications to it and all available documentation describing how to modify the Original Work. Licensor agrees to provide a 
+machine-readable copy of the Source Code of the Original Work along with each copy of the Original Work that Licensor 
+distributes. Licensor reserves the right to satisfy this obligation by placing a machine-readable copy of the Source Code in 
+an information repository reasonably calculated to permit inexpensive and convenient access by You for as long as Licensor 
+continues to distribute the Original Work.
+
+4) Exclusions From License Grant. Neither the names of Licensor, nor the names of any contributors to the Original Work, nor 
+any of their trademarks or service marks, may be used to endorse or promote products derived from this Original Work without 
+express prior permission of the Licensor. Except as expressly stated herein, nothing in this License grants any license to 
+Licensor's trademarks, copyrights, patents, trade secrets or any other intellectual property. No patent license is granted to
+make, use, sell, offer for sale, have made, or import embodiments of any patent claims other than the licensed claims defined
+in Section 2. No license is granted to the trademarks of Licensor even if such marks are included in the Original Work. 
+Nothing in this License shall be interpreted to prohibit Licensor from licensing under terms different from this License any 
+Original Work that Licensor otherwise would have a right to license.
+
+5) External Deployment. The term "External Deployment" means the use, distribution, or communication of the Original Work or 
+Derivative Works in any way such that the Original Work or Derivative Works may be used by anyone other than You, whether 
+those works are distributed or communicated to those persons or made available as an application intended for use over a 
+network. As an express condition for the grants of license hereunder, You must treat any External Deployment by You of the 
+Original Work or a Derivative Work as a distribution under section 1(c).
+
+6) Attribution Rights. You must retain, in the Source Code of any Derivative Works that You create, all copyright, patent, or
+trademark notices from the Source Code of the Original Work, as well as any notices of licensing and any descriptive text 
+identified therein as an "Attribution Notice." You must cause the Source Code for any Derivative Works that You create to 
+carry a prominent Attribution Notice reasonably calculated to inform recipients that You have modified the Original Work.
+
+7) Warranty of Provenance and Disclaimer of Warranty. Licensor warrants that the copyright in and to the Original Work and 
+the patent rights granted herein by Licensor are owned by the Licensor or are sublicensed to You under the terms of this 
+License with the permission of the contributor(s) of those copyrights and patent rights. Except as expressly stated in the 
+immediately preceding sentence, the Original Work is provided under this License on an "AS IS" BASIS and WITHOUT WARRANTY, 
+either express or implied, including, without limitation, the warranties of non-infringement, merchantability or fitness for 
+a particular purpose. THE ENTIRE RISK AS TO THE QUALITY OF THE ORIGINAL WORK IS WITH YOU. This DISCLAIMER OF WARRANTY 
+constitutes an essential part of this License. No license to the Original Work is granted by this License except under this 
+disclaimer.
+
+8) Limitation of Liability. Under no circumstances and under no legal theory, whether in tort (including negligence), 
+contract, or otherwise, shall the Licensor be liable to anyone for any indirect, special, incidental, or consequential 
+damages of any character arising as a result of this License or the use of the Original Work including, without limitation, 
+damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or 
+losses. This limitation of liability shall not apply to the extent applicable law prohibits such limitation.
+
+9) Acceptance and Termination. If, at any time, You expressly assented to this License, that assent indicates your clear and 
+irrevocable acceptance of this License and all of its terms and conditions. If You distribute or communicate copies of the 
+Original Work or a Derivative Work, You must make a reasonable effort under the circumstances to obtain the express assent of
+recipients to the terms of this License. This License conditions your rights to undertake the activities listed in Section 1,
+including your right to create Derivative Works based upon the Original Work, and doing so without honoring these terms and 
+conditions is prohibited by copyright law and international treaty. Nothing in this License is intended to affect copyright 
+exceptions and limitations (including "fair use" or "fair dealing"). This License shall terminate immediately and You may no 
+longer exercise any of the rights granted to You by this License upon your failure to honor the conditions in Section 1(c).
+
+10) Termination for Patent Action. This License shall terminate automatically and You may no longer exercise any of the 
+rights granted to You by this License as of the date You commence an action, including a cross-claim or counterclaim, against
+Licensor or any licensee alleging that the Original Work infringes a patent. This termination provision shall not apply for 
+an action alleging patent infringement by combinations of the Original Work with other software or hardware.
+
+11) Jurisdiction, Venue and Governing Law. Any action or suit relating to this License may be brought only in the courts of a
+jurisdiction wherein the Licensor resides or in which Licensor conducts its primary business, and under the laws of that 
+jurisdiction excluding its conflict-of-law provisions. The application of the United Nations Convention on Contracts for the 
+International Sale of Goods is expressly excluded. Any use of the Original Work outside the scope of this License or after 
+its termination shall be subject to the requirements and penalties of copyright or patent law in the appropriate 
+jurisdiction. This section shall survive the termination of this License.
+
+12) Attorneys' Fees. In any action to enforce the terms of this License or seeking damages relating thereto, the prevailing 
+party shall be entitled to recover its costs and expenses, including, without limitation, reasonable attorneys' fees and 
+costs incurred in connection with such action, including any appeal of such action. This section shall survive the 
+termination of this License.
+
+13) Miscellaneous. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the
+extent necessary to make it enforceable.
+
+14) Definition of "You" in This License. "You" throughout this License, whether in upper or lower case, means an individual 
+or a legal entity exercising rights under, and complying with all of the terms of, this License. For legal entities, "You" 
+includes any entity that controls, is controlled by, or is under common control with you. For purposes of this definition, 
+"control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract 
+or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of 
+such entity.
+
+15) Right to Use. You may use the Original Work in all ways not otherwise restricted or conditioned by this License or by 
+law, and Licensor promises not to interfere with or be responsible for such uses by You.
+
+16) Modification of This License. This License is Copyright © 2005 Lawrence Rosen. Permission is granted to copy, distribute,
+or communicate this License without modification. Nothing in this License permits You to modify this License as applied to 
+the Original Work or to Derivative Works. However, You may modify the text of this License and copy, distribute or 
+communicate your modified version (the "Modified License") and apply it to other original works of authorship subject to the
+following conditions: (i) You may not indicate in any way that your Modified License is the "Academic Free License" or "AFL" 
+and you may not use those names in the name of your Modified License; (ii) You must replace the notice specified in the 
+first paragraph above with the notice "Licensed under <insert your license name here>" or with a notice of your own that is 
+not confusingly similar to the notice in this License; and (iii) You may not claim that your original works are open source 
+software unless your Modified License has been approved by Open Source Initiative (OSI) and You comply with its license 
+review and certification process.