Auto merge of #1499 - alexcrichton:issue-1497, r=brson
authorbors <bors@rust-lang.org>
Wed, 8 Apr 2015 21:50:03 +0000 (21:50 +0000)
committerbors <bors@rust-lang.org>
Wed, 8 Apr 2015 21:50:03 +0000 (21:50 +0000)
That usage didn't match any docopt patterns so one just needed to be added.

Closes #1497


Trivial merge