Auto merge of #3865 - matklad:doc-all-the-things, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 25 Mar 2017 02:22:06 +0000 (02:22 +0000)
committerbors <bors@rust-lang.org>
Sat, 25 Mar 2017 02:22:06 +0000 (02:22 +0000)
Beef up docs about integrating Cargo with other stuff

Add info about `--message-format=json`, `--dep-info` and custom cargo subcommands (mostly copy-pasted from the wiki :) ).

cc @carols10cents

r? @alexcrichton


Trivial merge