Adds support for uppercase color hex strings.  Fixes: http://goo.gl/2yFupW
Separated tween configuration and execution.
Adds CONTRIBUTING.md.
Refactored configuration. Updated documentation and semver.
Merge branch 'master' of git://github.com/unstoppablecarl/shifty into unstoppablecarl-master
Cleans up code and improves/fixes docs.
Fixes variable name and parameter annotation.
set npm module entry point

set npm module entry point
Merge pull request #39 from unstoppablecarl/master

set npm module entry point
Updates contributors list.
Cleans up bower.json and package.json.
#35 Provide a way to manually define the "scheduling" policy