little MovieClip optimization

Optimized getBounds for Sprite

Added tint to Canvas Graphics

changed vec4 to vec2 for color

Merge branch 'dev' of https://github.com/GoodBoyDigital/pixi.js into dev

little optimization on toLocal + toGlobal

Documentation - Array(Normalization) ...

YUIDoc does not have a standard (or really any) way of describing inner
types of arrays and there are two general forms used in the current pixi
code:

- `Array<X>`
- `Array An array of X`, or an _inconsistent_ variation of such

The first form is not even parsed correctly by the YUIDoc tool and the
contained type, X, does not appear in the documentation output (or parsed
data) at all. Other similar forms that fail to work are: `X[]`,
`Array{X}`m and `Array.<X>`.

The second form mixes the type (`Array`) and the description of the type
("An array of X"). It would suiting to say "Array of X".

Thus thus commit changes _both_ of the above forms into a normalized
`Array(X)`

While I do not want to impose this as the final chosen representation for
such types, it does _immediately_ address the documentation issues
mentioned above _and_ renders the nested type name in the documentation
output.

If a better method or converntion is found this _consistent_ and
generatable intermim VB-like syntax can be trivially found and replaced.

Another alternative of course, it to forbid anything more complex than
`Array` as a type.

Documentation - updates wrt. comments and fixes ...

- Corrected invalid '@name' to '@method'.

- {Integer} reverted to {Number}.

- Changed the 'scaleModes' link to 'PIXI.scaleModes'

- Removed base/prefix types; verified return signaures.

- Fixed mah typos.

Documentation - the rest of 'em changes ...

- Forgot to the scaleMode link changes

Documentation - initial stubs and fixes ...

- Pixi.js
  - Added basic YUIDoc entries to Pixi.js, including the addition of the
  "namespace-class".

- CanvasTinter
  - Removed constructor from invalid double static/constructor pair
  - Added static annotations

- VideoTexture
  - Added initial documentation/stubs

- Updated all "scaleMode" params to link-to PIXI.scaleModes

- Fixed autoDetect* method documentation so they show up in PIXI class

removed dead space

Fixed Graphics.arcTo issue

Fix pivot of non rotated display objects

added default blend mode to strip

Merge pull request #1162 from glafarge/patch-1 ...

Fix unused variable WebGLRenderer.instances

removed white space

Fixed blendmode in Srip

Unused var

Fix PIXI.WebGLRenderer.instances

Fixed Width / Height setter bug

Fixed Simple Graphic Render

Fixed Text measuring bug

Removed Events param from video as not required ...

breaking the limiting too..

Added event parameter to video events

version updated to 2.1.0

Fixed Arc bug

arcTo Fixed

Fixed arcTo bug

Fixed Rounded Rectangle

Fixed instances not existing bug