Updated docs for Tween.onUpdateCallback to indicate that you can specify the context
updated doc for Phaser.Tilemap#createBlankLayer
Updated doc for Input#deleteMoveCallback
Merge pull request #873 from foolmoron/dev

Updated docs for Tween.onUpdateCallback to indicate that you can specify...
Merge pull request #875 from JeanDavidDaviet/dev

updated doc for Phaser.Tilemap#createBlankLayer
Testing frame crop support.
Removed duplicate meta tags.
Fixed point.normalise | normalize #872
Sound.destroy(true) would call remove on the SoundManager, which in turn would throw a TypeError as it tried to remove the sound events twice (thanks @AnderbergE, fix #874)
Sound.pause will no longer fire a Sound.onStop signal, and the pause values are set before the onPause signal is dispatched (thanks @AnderbergE, fix #868)
Update to #868