fix global.cache check
better code
Merge pull request #3 from gameclosure/fix-global-cache

fix global.cache check
set initial timestep muted state based on CONFIG object
mock the console object for IE9; set CONFIG.isMuted based on hash state
Merge branch 'develop' of https://github.com/gameclosure/gcapi-priv into develop

* 'develop' of https://github.com/gameclosure/gcapi-priv:
  better code
  fix global.cache check