Merge pull request #1 from benhutchins/master

iOS 5, Android 4.1 and double firing "pointerend" event fixes
Whitespace commit to try to diagnose travis ci problem
Made quotes consistent
Merge pull request #2 from benhutchins/master

Correct unit test, fixed logic around pointerdown indicator, added new utility method preventClick.
Merge pull request #3 from benhutchins/master

Update readme with documentation, add in some missing methods to the polyfill
Proofreading and revising for clarity
Edits for clarity
Simplify summary in readme
Fix bug in example
Cleaning up dependencies, updating to latest
Re-adding grunt-contrib-clean
Rewording