fix incorrect usage of getPropertyValue and use getPropertyCSSValue when applicable
use window.requestAnimationFrame when possible
remove debug logs
rm extra newline
use camelCaseStyleAttributes instead of dashed-style-attribute-accessors
abstract out some of the vendor-specific code
version 0.1.8
Merge branch 'master' into gh-pages
Merge branch 'gh-pages' of github.com:matthieua/WOW into gh-pages