Defaulted CFFIXED_USER_HOME to same as google-toolbox-for-mac.

When running tests that use the keychain with GHUNIT_CLI, the following warning occurs:
	Warning: CFFIXED_USER_HOME is not set!  It should be set to the simulated home directory.

This should stop that warning.
Run $IPHONE_SIMULATOR_ROOT/usr/libexec/securityd to ensure keychain works during GHUNIT_CLI
Color approved image tests in overview - fixes #85
Remove GHTestStatusApproved
Code conventions
Run all on Main Thread
Merge branch 'approved-image-color' of github.com:x2on/gh-unit into approved-image-color
Merge branch 'master' into approved-image-color
Merge branch 'master' into approved-image-color
Merge pull request #83 from hborders/master

Run $IPHONE_SIMULATOR_ROOT/libexec/securityd during tests
Adding securityd script for command line docs
Merge branch 'master' into approved-image-color
Commenting out CFFIXED_USER_HOME change. Seems unsafe.
Updating file
Merge pull request #86 from x2on/approved-image-color

Color approved image tests in overview - fixes #85
Saving new and diff images from view tests
Writing a view test for view tests
Update README.md
Fixing for iOS6
Removing armv6 support
Fixing analyze warnings