Added simple sample app. Will add tests for library later.
Removed the libraries ability to leak context by removing hard references to activity context or fragmentmanger.
Smoothed out ShowDialogAction by removing factory and replacing with the Class<?>
Made AbstractDialogFragment abstract so it can not be directly used.
Spell check
Added rater.appLaunched onCreate to correctly show how to implement it.
Merge pull request #2 from chris2toasters/fragment_fixes

Fixes
Merge pull request #1 from chris2toasters/sample_app

Added simple sample app. Will add tests for library later.