Added custom cmake find for GMock

still not working though. Added cmake temp files to .gitignore.

Conflicts:

	CMakeLists.txt
	src/test/CMakeLists.txt
Including gmock dirs

Added gmock include dirs to project, deleted no longer needed
instructions that still use GMOCK_DIR hardcoded.

Conflicts:

	src/test/CMakeLists.txt
Using env

Finding gmock using environment variable GMOCK_ROOT.
It's copied to binary directory and then compiled with
the rest of libraries.
Cleaning up

Couldn't make custom gmock find work, so removed it for now.
REVIEW
after REVIEW 16fcb4b
Merge branch 'feature/gmockFind' into develop