Update changelog for 4.2.2

CHANGELOG.md

@@ -5,7 +5,17 @@ Changes
 ### Integrations affected
 
 ### Changes
-* [BUGFIX] Fix incorrect open file descriptors metric name in process check: See [#904](https://github.com/DataDog/dd-agent/pull/904)
+* [BUGFIX] Fix incorrect open file descriptors metric name in process check: See [#904]
+
+# 4.2.2 / 04-25-2014
+
+**Windows Only**
+
+### Integrations affected
+* Redis
+
+### Changes
+* [FEATURE] Support Redis check on Windows: See [#917]
 
 # 4.2.1 / 04-09-2014
 
@@ -958,6 +968,8 @@ If you use ganglia, you want this version.
 [#883]: https://github.com/DataDog/dd-agent/issues/883
 [#893]: https://github.com/DataDog/dd-agent/issues/893
 [#894]: https://github.com/DataDog/dd-agent/issues/894
+[#904]: https://github.com/DataDog/dd-agent/issues/904
+[#917]: https://github.com/DataDog/dd-agent/issues/917
 [@CaptTofu]: https://github.com/CaptTofu
 [@brettlangdon]: https://github.com/brettlangdon
 [@charles-dyfis-net]: https://github.com/charles-dyfis-net
@@ -982,4 +994,4 @@ If you use ganglia, you want this version.
 [@steeve]: https://github.com/steeve
 [@stefan-mees]: https://github.com/stefan-mees
 [@tomduckering]: https://github.com/tomduckering
-[@walkeran]: https://github.com/walkeran
+[@walkeran]: https://github.com/walkeran