Lock PhpSpec and Prophecy to the previous working version until the recent composer issues get resolved properly
Merge branch 'develop' into hotfix/rollback-dependency

Conflicts:
	composer.json
	composer.lock
Merge pull request #50 from MageTest/hotfix/rollback-dependency

Lock PhpSpec and Prophecy to the previous working version
Remove phpspec.yml from project root
Replace VarienObjectSubject with custom Caller object
Fix broken VarienSubjectMaintainer spec
Minor change to trigger Travis build
Update composer to phpspec RC4
Add 5.5 to travis versions
Remove empty spec object
Private method signatures must match in PHP5.3
Merge pull request #51 from shanethehat/feature/RC4-compatibility

Fix RC4 compatibility issues with Subject