spumko/joi — pull request #382 by briansorahan (2014-07-12 12:02:46+00:00)
Title: Add info to README about validate callback being optional

I much prefer not passing callbacks unless a function is doing IO, and think it would be nice to advertise in the README that the callback parameter to Joi.validate is optional.
This behavior is discussed in [issue 97](https://github.com/spumko/joi/issues/97).