doc: add @cjihrig as a maintainer

PR-URL: https://github.com/libuv/libuv/pull/752
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-by: Bert Belder <bertbelder@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>

CONTRIBUTING.md

@@ -23,8 +23,7 @@ The stable branch is effectively frozen; patches that change the libuv
 API/ABI or affect the run-time behavior of applications get rejected.
 
 In case of doubt, open an issue in the [issue tracker][], post your question
-to the [libuv mailing list], or contact one of project maintainers
-(@bnoordhuis, @piscisaureus, @indutny or @saghul) on [IRC][].
+to the [libuv mailing list], or contact one of [project maintainers][] on [IRC][].
 
 Especially do so if you plan to work on something big.  Nothing is more
 frustrating than seeing your hard work go to waste because your vision
@@ -167,3 +166,4 @@ not send out notifications when you add commits.
 [libuv mailing list]: http://groups.google.com/group/libuv
 [IRC]: http://webchat.freelibuv.net/?channels=libuv
 [Google C/C++ style guide]: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
+[project maintainers]: https://github.com/libuv/libuv/blob/master/MAINTAINERS.md

MAINTAINERS.md

@@ -6,6 +6,7 @@ libuv is currently managed by the following individuals:
 * **Ben Noordhuis** ([@bnoordhuis](https://github.com/bnoordhuis))
   - GPG key: D77B 1E34 243F BAF0 5F8E  9CC3 4F55 C8C8 46AB 89B9 (pubkey-bnoordhuis)
 * **Bert Belder** ([@piscisaureus](https://github.com/piscisaureus))
+* **Colin Ihrig** ([@cjihrig](https://github.com/cjihrig))
 * **Fedor Indutny** ([@indutny](https://github.com/indutny))
   - GPG key: AF2E EA41 EC34 47BF DD86  FED9 D706 3CCE 19B7 E890 (pubkey-indutny)
 * **Saúl Ibarra Corretgé** ([@saghul](https://github.com/saghul))