Update sample with http-auth module
Update sample with http-auth module

As you are using [http-auth](http://http-auth.info), I updated sample with it.

It causes problems like this:

- http://stackoverflow.com/questions/37615822/how-to-use-http-auth-with-sails/37634183#37634183
- https://github.com/balderdashy/sails/issues/2834
yoshioka-s/sails-docs-ja