Try and address collaborators api issue

Returned 404, I think you cannot create a var off of `router.route('...')` and
reuse it.

lib/routes/collaborators/index.js

@@ -8,10 +8,9 @@ var models = require('../../models');
 var utils = require('../../utils');
 var api = require('./api');
 var router = new express.Router();
-var rootRoute = router.route('/');
 var User = models.User;
 
-rootRoute.all(
+router.route('/').all(
  auth.requireUserOr401,
  middleware.project,
  auth.requireProjectAdmin
@@ -28,7 +27,7 @@ rootRoute.all(
  * @apiExample {curl} CURL Example:
  * curl -X GET http://localhost/api/strider-cd/strider/collaborators
  */
-rootRoute.get(function getCollab(req, res) {
+router.route('/').get(function getCollab(req, res) {
  var project = `${req.params.org}/${req.params.repo}`;
 
  User.collaborators(project, 0, function (err, users) {
@@ -69,7 +68,7 @@ rootRoute.get(function getCollab(req, res) {
  * @apiParam (RequestBody) {Number} access=0 Access level to grant to the
  * new collaborator. This can be `0`, for read only access, or `2` for admin access.
  */
-rootRoute.post(middleware.requireBody(['email']), function addCollab(req, res) {
+router.route('/').post(middleware.requireBody(['email']), function addCollab(req, res) {
  var project = `${req.params.org}/${req.params.repo}`;
  var accessLevel = req.body.access || 0;
  var email = req.body.email;
@@ -104,7 +103,7 @@ rootRoute.post(middleware.requireBody(['email']), function addCollab(req, res) {
  *
  * @apiParam (RequestBody) {String} email Email address to remove from the repo/project.
  */
-rootRoute.delete(middleware.requireBody(['email']), function delCollab(req, res) {
+router.route('/').delete(middleware.requireBody(['email']), function delCollab(req, res) {
  var project = `${req.params.org}/${req.params.repo}`;
  var email = req.body.email;