#12: rename 'detect_getusermedia.js' -> 'getusermedia.js'
#12: define Immediately-Invoked Function wrapper
#12: define getusermedia.js per 'browser-pcm-stream'
#12: minor filename comment change
Merge pull request #15 from jeff1evesque/js_getusermedia_api_syntax

#12 Properly define getusermedia