Release process doc.
R=keertip@google.com
Review URL: https://codereview.chromium.org//1434733003 .
diff --git a/doc/RELEASING.md b/doc/RELEASING.md
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+**Pushing a new Release**
+
+First, make sure travis and appveyor are GREEN.
+
+[![Build Status](https://travis-ci.org/dart-lang/linter.svg)](https://travis-ci.org/dart-lang/linter)
+[![Build status](https://ci.appveyor.com/api/projects/status/3a2437l58uhmvckm/branch/master?svg=true)](https://ci.appveyor.com/project/pq/linter/branch/master)
+
+All clear? Then:
+
+ 1. Update `pubspec.yaml` with a version bump and `CHANGELOG.md` accordingly.
+ 2. Tag a release [branch](https://github.com/dart-lang/linter/releases).
+ 3. Publish to `pub.dartlang` (`pub --publish`); heed all warnings!
+ 4. On the `io` branch, regenerate linter docs (`dart tool/doc.dart --out path/to/io_linter/lints`).
+ 5. Update SDK `DEPS`.
+
+You're done!