Polished the composer file and the unit testing setup
Merge branch 'master' of github.com:WeCamp/Recall

# By Jasper N. Brouwer
# Via Jasper N. Brouwer
* 'master' of github.com:WeCamp/Recall:
  Addressed issues in GitWrapper
Added until test for the RecallGitWrapper
Merge branch 'master' of github.com:WeCamp/Recall

# By Dennis de Greef
# Via Dennis de Greef
* 'master' of github.com:WeCamp/Recall:
  Finished stuff after code review yesterday
Merge branch 'master' of github.com:WeCamp/Recall

# By Dennis de Greef (1) and Jasper N. Brouwer (1)
# Via Jasper N. Brouwer (1) and Pascal de Vink (1)
* 'master' of github.com:WeCamp/Recall:
  Fixed call_user_func* issue in GitWrapper::__call()
  Implemented initial serializer
Fixed the GitWrapper unit test