Fix: add missing coupon routes

lib/routes/pairingRoutes.js

@@ -0,0 +1,25 @@
+const express = require('express')
+const router = express.Router()
+
+const ca = require('../middlewares/ca')
+const httpError = require('../route-helpers').httpError
+const pairing = require('../pairing')
+const populateDeviceId = require('../middlewares/populateDeviceId')
+
+function pair (req, res, next) {
+  const token = req.query.token
+  const deviceId = req.deviceId
+  const model = req.query.model
+
+  return pairing.pair(token, deviceId, model)
+    .then(isValid => {
+      if (isValid) return res.json({ status: 'paired' })
+      throw httpError('Pairing failed')
+    })
+    .catch(next)
+}
+
+router.post('/pair', populateDeviceId, pair)
+router.get('/ca', ca)
+
+module.exports = router