fixed some format by toolbar.
import rbst from https://github.com/frankmichler/rbst/ rev:4598c8d573c564fc45c9bc7badf5a13631846c8c.
Added a Gemfile

Without the Gemfile, the gem is not available to Redmine since bundler doesn't
package the gem and Redmine doesn't load properly.  Problem is resolved fine
ater running "bundle install --without development test" once this file is available.
Merge pull request #1 from zms/master

Added a missing Gemfile - required to work with Redmine 1.4.2