Pixi Updates


I decided to maintain my own PIXI defs as there is still no official source. I went through the 1.6.1 source and implemented everything then replaced the PIXI defs in the Phaser.d.ts file.  It works fine on my side. 

If you merge this and we have no issues, then I may approach Mat shortly with that PIXI.d.ts, if I do that, how would the Definitions be handled? There would be Pixi.d.ts and Phaser.d.ts