_.partitionBy docs show _.keep instead

[lucaslin]

The docs for partitionBy show the signature as _.keep(array:Array, fun:Function).

Maybe it just needs to be rebuilt?

The current .md docs show the correct signature.

https://github.com/documentcloud/underscore-contrib/blob/master/index.html#L304

http://documentcloud.github.io/underscore-contrib/#partitionby

[jgonggrijp]

I was able to confirm that it just needs to be rebuilt. @joshuacc Do we build the docs only on release? In that case we can close this.

[joshuacc]

@jgonggrijp Yes, that is the current practice. Ideally I'd like to pull the built docs out of git entirely to avoid this sort of misunderstanding.