Updated README.md to better describe code branches

README.md

@@ -1,6 +1,7 @@
-
 # VisionEval Repositories
 
+## Documentation Branch
+
 There are three repositories to serve different purposes:
  - **[VisionEval](https://github.com/VisionEval/VisionEval)**: Public release version of VisionEval. There is one master branch only. This wiki is associated with the VisionEval repository. If you have a bug report or other issue, create an issue instead in the VisionEval-Dev repository ([here](https://github.com/VisionEval/VisionEval-Dev/issues)).
 
@@ -10,3 +11,7 @@ There are three repositories to serve different purposes:
 
 See the [Repository Structure document](Repository-Structure.md) in this branch of VisionEval-Dev for more details.
 
+You are looking at the documentation branch of VisionEval-dev. To get the code, you need to check out either the
+"development" (VisionEval-dev) or the "master" branch (VisionEval or VisionEval-dev).
+
+