Added .gitignore for gtest-1.6.0 folder.

Change-Id: I5a11d7260ad22a8fb2de12c44b6ff52fbf514a35
Added unit test example in
objects/area/areashapes/test/CircularAreaShapeTest.cpp.

Change-Id: I981a4736d69b5865dbe18ca3fd85476cbfd3c2a1
Merge "Added .gitignore for gtest-1.6.0 folder." into unstable
Merge "Added unit test example in objects/area/areashapes/test/CircularAreaShapeTest.cpp." into unstable