Change lauch command to 'ansible-playbook'

Under 'Launch', running 'ansible-playbook' instead of 'ansible' worked for me.
Merge pull request #11 from mikemccabe/patch-1

Change lauch command to 'ansible-playbook'
run update-rc.d defaults to restart on boot

Addresses #14
Merge pull request #1 from mikemccabe/patch-2

Patch 2