More grunt commands

[qwo]

see only grunt-browersify is the only command.

any opinions about adding any of the options

• concat/uglify
• sass compilation
• connect server
• watch files

[lynnaloo]

Watch is already in there. I'd prefer Less over Sass, but let's wait on that since it's not as important.

Concat/uglify might be a good early addition.

[lynnaloo]

also need to add jshint