Add minimal 'echo' facebook bot

index.js

@@ -1 +1,14 @@
-console.log('The journey of a thousand miles begins with one step. — Lao Tzu')
+const micro = require('micro')
+const {router} = require('microrouter')
+
+const fbBot = require('./bot/facebook')
+
+const bots = [fbBot, (req, res) => micro.send(res, 404, 'Not found.')]
+
+const server = micro(router(...bots))
+
+const port = process.env.PORT || 3000
+server.listen(port)
+console.info(`Listening on port ${port}`)
+
+module.exports = server