Add README and slides.

Author: Jesse White

README.md

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+# OpenNMS Integration Patterns - OUCE 2018
+
+## Initial setup
+
+The scripts in this project were tested with a build of Horizon 23.0.0-SNAPSHOT (at commit 7184e611e315a5df8d9a9c1e5089a252adb122e4).
+
+The demo was performed with a clean database only containing a single node with FS/FID 'NODES:localhost' with an IP interface of 127.0.0.1.
+
+### Before demo
+
+* Copy jython .jar
+* Enable syslog northbounder
+* Enable TCP output
+* Patch provision.pl