title: Postgresql.app user database deleted. How to recreate?
body: <p>I'm developing a Ruby on Rails app for use on Heroku and want to use <code>postgresql.app</code> locally for the development environment (mostly to play with Rails 4.0's new array attributes.)  I had installed postgresql.app a while ago when playing around with it, then uninstalled and deleted the user database it initially created.  I've now reinstalled the app, but it tries to connect to that database before it'll do anything, including allowing me to do anything with psql at the command line.</p>
  
  <p>If I use psql at the command line, it does this:</p>
  
  <blockquote>
    <p>psql: FATAL:  database "bcarr" does not exist</p>
  </blockquote>
  
  <p>logout</p>
  
  <p>Any suggestions for how to reset the app's settings so it can recreate that initial user db, or how I can recreate that db?</p>
  
  <p>Many thanks in advance for any help! </p>