adding vagrant doc and fixing indentation in vagrantfile

docs/vagrant.md

@@ -0,0 +1,44 @@
+# Using the MMLSpark Vagrant Image
+
+## Install Vagrant and Dependencies
+
+You will need to a few dependencies before we get started. These instructions are for using Vagrant on Windows OS.
+
+1. Ensure [Hyper-V]((https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/) is enabled or install [Virtualbox](https://www.virtualbox.org/)
+2. Install a X Server for Windows, [VcXsrv](https://sourceforge.net/projects/vcxsrv/) is a lightweight option.
+3. Install the Vagrant version for your OS [here](https://www.vagrantup.com/downloads.html)
+
+## Build the Vagrant Image
+
+Start powershell as Administrator and go to the `mmlspark/tools/vagrant` directory and run
+
+```
+vagrant up
+```
+
+*Note: you may need to select a network switch, try the Default Switch option if possible*
+
+## Connect to the Vagrant Image
+
+First start the X-Window server (XLaunch if using VcXsrv).
+
+From the same directory (with powershell as Administrator) run
+
+```
+$env:DISPLAY="localhost:0"
+vagrant ssh -- -Y
+
+# now you can start IntelliJ and interact with the GUI
+> idea
+```
+
+
+## Stop the Vagrant Image
+
+```
+vagrant halt
+```
+
+## Further reading
+
+This guide covers the bare minimum for running a Vagrant image. For more details see the [Vagrant Documentation](https://www.vagrantup.com/intro/index.html).

tools/vagrant/Vagrantfile

@@ -107,9 +107,9 @@ SHELL
 
 config.vm.provision "shell", privileged: false, inline: <<-SHELL
   # Install mmlspark
-	cd ${HOME_DIR}
-	git clone https://github.com/Azure/mmlspark.git 
-	cd mmlspark
+  cd ${HOME_DIR}
+  git clone https://github.com/Azure/mmlspark.git
+  cd mmlspark
   sbt setup
 SHELL