Install nodejs from pap to ensure we always have a recent version
Install or update grunt cli when provisioning server
Add grunt autocompletion
List grunt and nodejs in readme
Merge remote-tracking branch 'aaronjorbin/addgrunt'

Closes #127
Thanks @aaronjorbin!
Move PPA for NodeJS to our custom apt source list

Previous commit checked for the existence of NodeJS in the Apt source list and then added the PPAs if necessary. We'll be on Precise for a while, so most likely we're safe always specifying the PPA for consistency as Precise doesn't have it available by default. Also some formatting.
Cleanup some space formatting
make is already specified as a package