docs(CONTRIBUTING): revert is a modifier

stevemao · stevemao · commit 9b1de0bb507a · 2015-06-30T12:09:49.000+10:00
EG: 462f444
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -192,7 +192,7 @@ Each commit message consists of a **header**, a **body** and a **footer**.  The
 format that includes a **type**, a **scope** and a **subject**:
 
 ```
-<type>(<scope>): <subject>
+(revert: )<type>(<scope>): <subject>
 <BLANK LINE>
 <body>
 <BLANK LINE>
@@ -202,6 +202,10 @@ format that includes a **type**, a **scope** and a **subject**:
 Any line of the commit message cannot be longer 100 characters! This allows the message to be easier
 to read on github as well as in various git tools.
 
+### Revert
+
+If the commit reverts a previous commit, it should begin with `revert: `, followed by the header of the reverted commit. In the body it should say: `This reverts commit <hash>.`
+
 ### Type
 Must be one of the following:
 
