Merge pull request #76 from XekeDeath/dev

Fix for particles emitting in the wrong area when using emitter.width/height. And small change to make animation looping more robust.

src/animation/Animation.js

@@ -223,7 +223,7 @@ Phaser.Animation.prototype = {
             {
                 if (this.looped)
                 {
-                    this._frameIndex = this._frameIndex - this._frames.length;
+                    this._frameIndex %= this._frames.length;
                     this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
 
                     if (this.currentFrame)
@@ -401,4 +401,4 @@ Phaser.Animation.generateFrameNames = function (prefix, min, max, suffix, zeroPa
 
     return output;
 
-}
+}