title: How to specify the connection string in connect-pg-simple?
body: <p>The simple example on <a href="https://github.com/voxpelli/node-connect-pg-simple" rel="nofollow noreferrer">https://github.com/voxpelli/node-connect-pg-simple</a>  shows: </p>
  
  <pre><code>var session = require('express-session');
  
  app.use(session({
    store: new (require('connect-pg-simple')(session))(),
    secret: process.env.FOO_COOKIE_SECRET,
    resave: false,
    cookie: { maxAge: 30 * 24 * 60 * 60 * 1000 } // 30 days
  }));
  </code></pre>
  
  <p>But when I try it, node complains:</p>
  
  <blockquote>
    <p>throw new Error('No database connecting details provided to
    connect-pg-simple');</p>
  </blockquote>
  
  <p>How do I specify the connection string?</p>