Modernizr/Modernizr — pull request #1191 by voidplus (2014-01-15 22:16:09+00:00)
Title: Added initial device light detection

Please read/see the headline.

http://www.w3.org/TR/ambient-light/
https://developer.mozilla.org/en-US/docs/WebAPI/Using_Light_Events#Browser_compatibility
http://girliemac.com/blog/2014/01/12/luminosity/