Add getColor method and corresponding tests

Currently returns hex by default, rgb otherwise
Allow parsing of colors from any property

Have getStyle delegate color parsing if the requested property is a color
Correctly parse rgba numbers as hex
Parse any property that returns a color
Assume colors are always returned as rgb(a)
Add some comments because that shit is terse
Whitespace
Parse colors in any CSS property

Tokenize the CSS values so that we can parse the color in something like '1px solid rgb(10, 10, 10)'
Add Travis
Fix build badge location
Merge pull request #18 from adorableio/get_colors

Color Parsing