Auto merge of #2481 - jespino:add-favicon-to-doc, r=alexcrichton
authorbors <bors@rust-lang.org>
Mon, 14 Mar 2016 17:26:19 +0000 (10:26 -0700)
committerbors <bors@rust-lang.org>
Mon, 14 Mar 2016 17:26:19 +0000 (10:26 -0700)
Add favicon to doc.crates.io

This fix the issue rust-lang/crates.io#245


Trivial merge