Updated with jslint validated jQuery Star Rating Plugin v4.11
Loosen up dependencies.
Fix image path.
(cherry picked from commit fad88281398d0493712f5cecf5d714e06315cb99)

Signed-off-by: Tobias Bohwalli <hi@futhr.io>
JS change to prop from attr.

As of jQuery 1.6, the .attr() method returns undefined for attributes
that have not been set. To retrieve and change DOM properties such as
the checked, selected, or disabled state of form elements, use the
.prop() method.
Gemfile changes to make tests happy.