Auto merge of #3779 - amotz:appveyor-url, r=alexcrichton
authorbors <bors@rust-lang.org>
Wed, 1 Mar 2017 16:56:39 +0000 (16:56 +0000)
committerbors <bors@rust-lang.org>
Wed, 1 Mar 2017 16:56:39 +0000 (16:56 +0000)
Fix AppVeyor badge URL


Trivial merge