Interactivity Added

-Interaction Manager added to pixi.js to enable mouse and touch
interactivity.

- Interactive example added to examples folder

- docs updated

- build file updated
Update README.md
Update README.md
Update README.md
Removed merge conflict tags from Detector
Merge pull request #15 from ewdicus/master

Removed some merge conflict tags from Detector.js
Add mime type override to json request
Check method exists before calling
Merge pull request #18 from Nibbler999/spritesheet-mime

Add mime type override to json request