Update README.md

README.md

@@ -7,4 +7,8 @@ Use `git submodule init` followed by `git submodule update` to pull the followin
 1. RapidLib
 2. XMM
 3. GVF
-4. RepoVizz2 Client
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+4. RepoVizz2 Client
+5. 
+
+## C++   
+We are now using Catch for C++ testing. Look at the test fixtures in the test_project.xcodeproj for an example of how to implement it.
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