Merge pull request #1554 from drkibitz/feature/docs ...

Feature/docs

change karma path to pixi build ...

gulp build pixi to bin/pixi.js

exclude polyfills from docs

ignore third-party scripts in jsdoc

Use gulp-sourcemaps and write maps for both debug and release

write sourcemap to separate file

fix npm docs task

change jsdoc task to run npm script

export pixi.js for other bundles to require

update alvin/dev with dev

update jsdoc to go through all src

Updated the dependencies, fixed the doc generation and the travis build

More Dabbling with docs generation

Created task for jsdocs and docstrap

fix #1283; allow exclusion of modules

cache files for jshint on watch

fix bundle on watch update

fixup some forgotton spots

fix watch tsk

fix gulp watch

fix some require paths that changed with some refactoring

remove isDev; always output sourcemap; add uglify

initial move to new module folders

refactor utils

forgot some gulp files

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