docs update
Merge pull request #3 from guilex/master

Good find, thank you
Added some more documentation
Updated comment and class and updated composer.json with a new requirment
Updated the feature container to use doctrine's ArrayCollection
Updated composer.json with some excluded directories and files when making archives. Also added another method to the FeatureContainer
Moved the build.xml file to the main directory
Added packagist badges
Merge branch 'develop' of github.com:JoshuaEstes/FeatureToggle into develop

* 'develop' of github.com:JoshuaEstes/FeatureToggle:
  Updated composer.json with some excluded directories and files when making archives. Also added another method to the FeatureContainer
  Updated the feature container to use doctrine's ArrayCollection
  Updated comment and class and updated composer.json with a new requirment
  Added some more documentation