proof of concept
move grunt to devDependencies
tune grunt for concat and uglify lib
add plugin to grunt: uglify, jasmine and yuidoc
add jasmine unittests
add jshint
build docs by yuidoc and grunt
set continuous testing by Testacular
add spec for engine, module, and entity
inject systems into the world from module
move utility methods to utils.js file
deep copy of System from config
Merge branch 'master' of github.com:Hyzhak/darlingjs