title: How to setup storm crawler with Postgres?
body: <p>I'm trying to set up the stormcrawler with a postgres sql database as the backend. But there is no documentation on what tables need to exist to be able to start the storm crawler.</p>
  
  <p>What tables do I need and which columns do they have? Or is there some way to automatically create the required tables?
  Also how do I start the crawler in this mode? because I cannot send in a seed url like the example crawler topology.</p>