From 1509bc8897deac6ec3223e2f5ec67ba59cdf64b9 Mon Sep 17 00:00:00 2001
From: Steve Mao <maochenyan@gmail.com>
Date: Wed, 1 Jul 2015 10:11:49 +1000
Subject: [PATCH 1/3] docs(CONTRIBUTING): revert is a modifier

EG: https://github.com/angular/angular.js/commit/462f444b06ae5cad3ccb761b1dba7131df01a655
---
 CONTRIBUTING.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8c130104a3e0..5693b7015da0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -202,6 +202,9 @@ 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>.`, where the hash is the SHA of the commit being reverted.
+
 ### Type
 Must be one of the following:
 

From 5b49dbb220a374a6b06ee9daf8aa1dfaac230f6b Mon Sep 17 00:00:00 2001
From: Steve Mao <maochenyan@gmail.com>
Date: Wed, 1 Jul 2015 10:05:23 +1000
Subject: [PATCH 2/3] docs(CONTRIBUTING): how to write a breaking change

---
 CONTRIBUTING.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5693b7015da0..873cc39a9070 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -238,6 +238,7 @@ The body should include the motivation for the change and contrast this with pre
 The footer should contain any information about **Breaking Changes** and is also the place to
 reference GitHub issues that this commit **Closes**.
 
+**Breaking Changes** should start with the word `BREAKING CHANGE:` with a space or two newlines. The rest of the commit message is then used for this.
 
 A detailed explanation can be found in this [document][commit-message-format].
 

From 22ba88638146252b1e07d7c23128488d482c3072 Mon Sep 17 00:00:00 2001
From: Steve Mao <maochenyan@gmail.com>
Date: Wed, 1 Jul 2015 10:08:03 +1000
Subject: [PATCH 3/3] docs(CONTRIBUTING): state what is mandatory or optional

---
 CONTRIBUTING.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 873cc39a9070..362f3fd2e126 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -199,6 +199,8 @@ format that includes a **type**, a **scope** and a **subject**:
 <footer>
 ```
 
+The **header** is mandatory and the **scope** of the header is optional.
+
 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.