Running npm run dev is showing `TypeError: app.use() requires middleware functions`

@diegohaz After i setuped a project using yo rest and when i run `npm run dev` it is showing the following error
`/Users/rajkannanbalu/Documents/ulavarsanthai/webservices/node_modules/express/lib/application.js:210
throw new TypeError('app.use() requires middleware functions');
^

TypeError: app.use() requires middleware functions
at EventEmitter.use (/Users/rajkannanbalu/Documents/ulavarsanthai/webservices/node_modules/express/lib/application.js:210:11)
at exports.default (/Users/rajkannanbalu/Documents/ulavarsanthai/webservices/src/services/express/index.js:33:7)
at Object. (/Users/rajkannanbalu/Documents/ulavarsanthai/webservices/src/app.js:7:13)
at Module._compile (module.js:570:32)
`

Looks like some setup need for middleware in express 4.0

Start by running `npm run dev` and inspect `src/services/express/index.js` at line 33, where the stack trace shows `app.use()` failing; then check how that service is initialized from `src/app.js` line 7. Done means the generated project starts without the middleware-function TypeError.

Written by the indexing model from the issue text.