successful removal of globals and _dirty flags

Lots of core renderer-related updates ...

- Removed `Stage` completely from core lib, in favor of directly rendering
  DisplayObjects
- Removed rendersession from core lib
- Rewrote WebGL managers to be more DRY and have a common base
- Rewrote Shaders to be more DRY and have a common base

fix require paths for browserify

initial move to new module folders

tons of jshint and typo fixes

refactor utils

run clena on webgl shaders

run clean on strip

run clean on interaction

run clean on utils

run clean on textures

run clena on text

run clean on webgl renderer

cleanup canvas renderers

refactor primitives

refactor loaders

refactored geom

refactored the filters

fix some docs

browserify display objects

modify some common exports

Tidy and tweaked the vertex shader

Added flipY property to all shaders ...

added boundsDirty check to graphics objects

it begins; index done, moving to display

Initial Reorganization ...

This commit was the first to start the rewrite of PIXI

1. Removes meta files not necessary to be in the core repo (docs,
examples, random trim/ folder, etc)
2. Rewrite grunt workflow to be gulp
3. Setup testing and browserify tasks to prepare for code rewrite
4. Trim trailing space from the readme

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

Conflicts:
	bower.json
	package.json

Without forgetting the Rounded Rect

Removed the type property from the constructors

Added the missing graphics type definitions, and changed some internal namings to be more in line with the rest of the API

fixed Y-flipped mask issue on render texture