Update to use livereload and regarde.

Removed grunt-contrib-watch and replaced it with grunt-regarde.
Removed the watch supplied by grunt-contrib-watch with a new
  task to startup livereload and reguard.

Added livereload to automatically refresh the browser when code
  changes.
Add livereload script to index.html.
Merge pull request #1 from dastagg/master

Add livereload and replace watch with regarde