gistfile1.js

app.get('/results', function (request, response) {

  var instagrams = [];
  var tweets = [];

  pg.connect(process.env.DATABASE_URL, function (err, client, done) {
    client.query('SELECT * FROM tweets ORDER BY created_at DESC', function (err2, result) {
      if (err2) {
        console.error(err); response.send('Error ' + err2);
      } else {
        tweets = result.rows;
      }
    });
    client.query('SELECT * FROM instagrams ORDER BY created_at DESC', function (err2, result) {
      if (err2) {
        console.error(err); response.send('Error ' + err2);
      } else {
        instagrams = result.rows;
      }
    });
    done();
  });

  var feed = [instagrams, tweets];

  response.send(feed);