Document Promise#all not taking multiple arguments
Document Promise#all not taking multiple arguments

This functionality has been removed in 0498f7c4c.

vigetlabs/promise,astorije/promise,then/promise,slang800/promise,implausible/promise,nodegit/promise,Bacra/promise,taylorhakes/promise,ljharb/promise,JoshuaWise/jellypromise,cpojer/promise