Created a grunt file and a package.json of it's contributions.

Does basic compass compiling and javascript linting/minification
Added node_modules and .sass_cache to the gitignore
Moved the admin css into sass
Moved the admin js into an external asset
Moved the asset images into an /images subdirectory
Compiled our first compass and js via grunt
Updated the readme image paths to our new asset/images directory
Corrected an issue in our legacy code where html was improperly being escaped
Increased the plugin tested up to version to 4.0
Going to start displaying the current plugin version in the git readme header