Quality of Life Improvement - Particles trigger event on end of animation

e.g. you want to destroy bomb after it has exploded
```javascript
var bomb = Crafty.e("2D,Canvas,Particles")
                 .attr({x: x, y: y})
                 .particles(options)
                 .bind("ParticleAnimEnded", function() {
                    this.destroy();
                 });
```