Merge pull request #2 from polco/master

Changed id by name. Fix delete sound bug
Merge pull request #3 from polco/master

Fix transition bug.
* added isMuted flag, toggleMuteAll, and fix unmuteAll bug
* bump version to 0.1.3
Merge pull request #4 from maxwan/master

* added isMuted flag, toggleMuteAll, and fix unmuteAll bug
Fixes fade to 0 volume calculation bug
Merge pull request #5 from cweihan/master

Fixes fade to 0 volume calculation bug
0.1.4 fix fadeout but
0.1.5: fixes for playing sound before sm2 is loaded
uncomplicate volume transition
0.1.7: no more play soundList, onload checks if it is playing already before playing. transitions work again
0.1.8: restart will restart the sound now.
try soundManager.play, it seems reliable
Math.ceil is funny.
sounds are played at the channel volume level