Add grunt serve task that starts a livereloading webserver and watches source files for changes
Merge branch 'master' of https://github.com/CreateJS/EaselJS into grunt-serve-task

Conflicts:
	build/Gruntfile.js
	build/package.json
build serve task updates: don't compile documenation and have the watch ignore version files.
Merge pull request #521 from MannyC/grunt-serve-task

Add grunt serve task that starts a livereloading webserver and watches source files for changes