Groups can now be added to other Groups as children via group.add() and group.addAt().
Groups now have an 'alive' property, which can be useful when iterating through child groups with functions like forEachAlive.
phaser.d.ts corrections
World is a Group. Needed to remove stuff again e.g. a "BitmapText"
Added a new Full Screen Mobile template example.
Merge pull request #295 from Niondir/dev

phaser.d.ts corrections
Added new Contributors guide.
Device.quirksMode is a boolean that informs you if the page is in strict (false) or quirks (true) mode.
Canvas.getOffset now runs a strict/quirks check and uses document.documentElement when calculating scrollTop and scrollLeft to avoid Chrome console warnings.
The Time class now has three new methods: addEvent, repeatEvent and loopEvent. See the new Timer examples to show how to use them.
Phaser Definitions Update
Added "GetCurrentState" to StateManager
Phaser.Timer is now feature complete and fully documented. You can create Phaser.TimerEvents on a Timer and lots of new examples have been provided.
Merge pull request #299 from Niondir/dev

Phaser Definitions Update
Fixed some documentation typos.
Acceleration tested and working fine. Proper accurate friction added and working really nicely, so much better than 'drag' used to. Considering removing drag, although will break the API history.
Removed temp. debug vars.
Updated Body file and compiled + minified builds for those wanting to test.