caching colors in scales to improve performance
add support for generating webgl colors
Merge pull request #19 from kkaefer/gl

Add support for generating WebGL colors
release 0.5.5
added test for gl color
Add premultiply operation
add hex output test
including license in build
Merge branch 'premultiply' of https://github.com/kkaefer/chroma.js into kkaefer-premultiply

Conflicts:
	test/colors-test.coffee
updated build
allowing usage as AMD module (fixes #15)
added scale.colors() for returning all colors (fixed #14)
removed unnecessary code
Update bower.json
fixed css-color parsing (accepting float values)
allowing export of hsl and hsla string (#17)
prefering w3cx11 color names over hex codes
adding tests
bumped version + build
updated api docs