Update documentation and readme

.gitattributes

@@ -10,3 +10,4 @@
 *.bundle filter=lfs diff=lfs merge=lfs -text
 *@*.json filter=lfs diff=lfs merge=lfs -text
 *.csv filter=lfs diff=lfs merge=lfs -text
+*.pdf filter=lfs diff=lfs merge=lfs -text

README.md

@@ -119,11 +119,15 @@ Before we can bring any capabilities to the Pulse Unity Asset, they will need to
 
 ## Contributing
 
-### Found a bug or can't quite make it work?
+### Found a bug
 
 Ask your questions and share your remarks in our issue tracker on GitLab: 
 https://gitlab.kitware.com/physiology/PulseUnityAsset/issues
 
+### Can't quite make it work?
+
+You can find support on our [Discourse support forum](https://discourse.kitware.com/c/pulse-physiology-engine).
+
 ### Have a fix you'd like to contribute back?
 
 You can follow this simple [forking workflow](https://docs.gitlab.com/ee/workflow/forking_workflow.html):