Add Gemfile, Updated package.json and gruntfile.coffee

Added Gemfile and included compass v1.0.x dependency.  <--- Using bundle update/install is mentioned in the docs, but there was no Gemfile.  I added to comply with the documentation.

Updated package.json to use non-breaking ^ for all dependencies.  <-- This is more flexible for patch and bug updates.

Updated gruntfile.coffee to remove cssmin and utilize compass for compression of CSS. <-- simplified the gruntfile by removing the need to utilize an additional component, and utilize Compass for css compression.