Removed client sub folder and moved all files to base directory
Added grunt-express task to start up api server

The api server will start up on port 3000 and will be accessible to the app.  Currently only dev is set up. Not sure what to do about production. The api server is can be launched in a live reload mode by running `grunt express:reload`.
Merge pull request #2 from 72Fest/develop-gruntServer

File structure changes and grunt-express additions