fix unbinding bug
Merge pull request #269 from wise9/hotfix/BinaryInputManager#unbind_bugfix

fix unbinding bug
delete lang files
add lang/*, "enchant.min.js", "enchant.js" to .gitignore
Fix deprecated web-audio api:
GainNode.gain.value instead of AudioBufferSourceNode.gain.
AudioBufferSourceNode.start() instead of AudioBufferSourceNode.noteGrainOn().
AudioBufferSourceNode.stop() instead of AudioBufferSourceNode.noteOff().
Fix web-audio api checking. Use window.AudioContext instead of window.webkitAudioContext
Fix for lower compatibility of webaudio api.
retab
bugfix about DOMSound that had dispatched load event more than once (#235)
add Deferred tests using Mocha
add test for enchant.Group using Mocha
add Label.textAlign tests
add entity test
fix typo
add MutableText test using Mocha
add mixing classes test using Mocha
add Class#create creates indivisual class test
add create Class inheritting from other class teset
add enchant.Class test
add Node test