Merge pull request #1 from jaypipes/master

Adds DHCP agent recipe and fixes minor whitespace stuff
Add L3 Agent recipe

* Adds the L3 agent recipe which installs and configures the
  L3 agent (for most plugins) as well as the metadata agent
* Small cleanups in README
* Adds more configurable options for DHCP server
Remove sudo call in quantum-node-setup
Merge pull request #2 from jaypipes/working

Add L3 Agent recipe