Updates from internal repository. This is a candidate for PreloadJS 0.3.0

* Updated build process, includes new commands
* More thorough documentation
* Renamed PreloadJS class to LoadQueue
* Tag loading of additional types
* Added Event Dispatching

Please see the VERSIONS text for a list of what else is new.
Merge branch 'Version_030' of github.com:CreateJS/PreloadJS into Version_030

Conflicts:
	lib/preloadjs-NEXT.min.js
	src/preloadjs/AbstractLoader.js