Merge pull request #1 from chrisjshull/patch-1

Provide clearly written out license.
treat transition-property like transition for value prefixing

The code used to check for the css property 'transition' for css values
to prefix. 'transition' however is a shorthand of several properties
(including 'transition-property'). This change just makes 'transition-
property' follow the same logic as 'transition' for css values to
prefix.
Merge pull request #118 from chrisjshull/master

treat transition-property like transition for value prefixing