Validation's 'run' option returns 404

[newswim]

The validation exercise wouldn't not pass until I ran 'verify' -- this was even after attempting the recommended answer.

This was done using Node v4.4 and NPM v2.14.20, thanks!

[fiveisprime]

This is related to #130

The Validation exercise is not super useful in its current state, but updating it would make it incredibly similar to the next exercise (validation using Joi object).

I think these exercises need to be re-evaluated and possibly made into "basic" and "advanced" validation.