Updated the README.md file regarding to log volume
Recreate the cluster only when we need it.  Switch to using setuser. Don't retry creating the superuser (this has some issues.)
Don't start postgres with the pg_createcluster command.
Add a Vagrantfile to the project.  Thanks @jirikolarik!
Add port forward to Vagrantfile and ignore .vagrant.
Merge pull request #20 from zheli/master

Updated the README.md file regarding to log volume.
Merge origin/master

Conflicts:
	Dockerfile