Adding grunt scaffolding

Fixes #5

There may be a few conflicting rules in .jshintrc and .jscs.json (like max line length). We can clean those up later if they bite us and probably remove the .jshintrc equivalent since it seems to be going away from style checking.

Assuming you already have the grunt-cli installed globally you should be able to run `$ grunt` and the default task will run the jshint, jscs, and copyright tasks.