Merge pull request #8 from cro/master

Add pillar.example
Add pg_hba.conf, Ubuntu mapping, and example..
Ubuntu uses Debian mapping.
Add creation of user and db for the app.
Add watch state, to watch pg_hba.conf.
pg_hba.conf is Jinja-templated.
Merge pull request #9 from audreyr/master

Add pg_hba.conf, and creation of user/db
Wrap the Postgres conf file in an if-statement; grab source from Pillar
Wrap app db creation in an if-statement to check for Pillar values
Moved conf file watch statement into the if-statement