Auto merge of #4298 - behnam:ignore, r=alexcrichton
authorbors <bors@rust-lang.org>
Wed, 19 Jul 2017 00:57:30 +0000 (00:57 +0000)
committerbors <bors@rust-lang.org>
Wed, 19 Jul 2017 00:57:30 +0000 (00:57 +0000)
[src/doc/manifest] Add section on Migrating to `gitignore`-like pattern matching

Tracking issue: https://github.com/rust-lang/cargo/issues/4268


Trivial merge