Merge pull request #75 from benkasminbullock/master

Add braces after "if" statements.
Added LCMS information
Updated to Little CMS 2
Set sRGB gamma after successful conversion
Avoid exact floating-point comparison

Fixes #77
Changed license to the simplified BSD license
cosmetic gamma related changes

Fixes #79
Use gAMA chunk only if sRGB is absent

Fixes #78
Braces
Merge branch 'master' of github.com:pornel/pngquant into new-interface

Conflicts:
	lib/libimagequant.c