Auto merge of #2231 - felixc:docstrings-for-all, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 19 Dec 2015 00:45:54 +0000 (00:45 +0000)
committerbors <bors@rust-lang.org>
Sat, 19 Dec 2015 00:45:54 +0000 (00:45 +0000)
Almost all commands have info on what they are for, but a few were
missing it.

Also cleans up some copy/paste misdocumentation along the way.


Trivial merge