Update CHANGELOG; tweaks for 0.12.2

Author: Spike Brehm

CHANGELOG.md

@@ -2,14 +2,16 @@
 
 ## 0.12.2 (December 9, 2016)
 
+### Patches
+
 * [Android] Added support for taking snapshots on Android
   [#625](https://github.com/airbnb/react-native-maps/pull/625)
   (@IjzerenHein)
 * [iOS] Allow legalLabelInsets to be changed and animated
   [#873](https://github.com/airbnb/react-native-maps/pull/873)
   (@scarlac)
 * Added rotation attribute documentation
-  [#](https://github.com/airbnb/react-native-maps/pull/)
+  [#871](https://github.com/airbnb/react-native-maps/pull/871)
   (@Arman92)
 * Update mapview.md documentation
   [#866](https://github.com/airbnb/react-native-maps/pull/866)