Merge branch 'hotfix/#184'
grunt
fix spell-miss on avatar.enchant.js
fix typo
modify Core#_tick
grunt
move nocomment examples
modify LoadingScene
Game -> Core
add build task, and changed lang task (#196)
ignore lang, build dir
modify Gruntfile
delete built files
prepare for v0.7.0 release:
Merge branch 'master' into develop

Conflicts:
	de/enchant.js
	de/plugins/avatar.enchant.js
	enchant.js
	enchant.min.js
	ja/enchant.js
	ja/plugins/avatar.enchant.js
	plugins/avatar.enchant.js