Switch to Koa, more es6

config/db.js

@@ -0,0 +1,17 @@
+'use strict';
+const debug = require('debug')('match.audio');
+
+// Shut mongodb-promisified up.
+const dir = console.dir;
+console.dir = function() {};
+const MongoClient = require('mongodb-promisified')().MongoClient;
+console.dir = dir;
+
+const uristring = process.env.MONGOLAB_URI || process.env.MONGOHQ_URL || 'mongodb://localhost:27017/match-audio';
+
+module.exports = function*() {
+  const client = yield MongoClient.connect(uristring);
+  debug('Successfully connected to Mongodb');
+  client.matches = client.collection('matches');
+  return client;
+};