Update README
diff --git a/.gitignore b/.gitignore
index d66a50b..4bea7e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /.settings
 /pom.xml.*
 /release.properties
+/gerrit
diff --git a/README.md b/README.md
index 77d6397..df2d6c4 100644
--- a/README.md
+++ b/README.md
@@ -16,15 +16,53 @@
 
 This plugin works on Gerrit 2.8 or later.
 
+About Buck
+---------------------
+
+[Buck] is a build system now gerrit adopt. If you want to use Buck,
+you need to setup it referring [Building with Buck] in gerrit documentation.
+
+[Buck]: http://facebook.github.io/buck/
+[Building with Buck]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.8.2/dev-buck.html
+
+
+Environments
+---------------------
+
+* `linux`
+  * `java-1.7`
+    * `maven-3.0.4`
+    * `buck`
+
 Build
 ---------------------
 
+* Using `maven`
+
     mvn package
 
+* Using `buck`
+
+    git clone git clone https://gerrit.googlesource.com/gerrit
+    ln -s $(pwd) gerrit/plugins/rabbitmq
+    cd gerrit
+    buck build plugins/rabbitmq:rabbitmq
+
+Using another version API
+--------------------------
+
+* For `maven`
+
 Now avaliable for Gerrit 2.8.1 only. If you want to use it on another version of Gerrit, please try the below.
 
     mvn package -DGerrit-ApiVersion=2.8
 
+* for `buck`
+
+After clone gerrit, you can checkout specified version.
+
+    git checkout -b v2.8 refs/tags/v2.8
+
 Reference
 ---------------------
 
@@ -52,6 +90,9 @@
 History
 ---------------------
 
+* 1.3
+  * Build with Buck
+
 * 1.2
   * Fix repository location for gerrit-api
   * Update README
diff --git a/pom.xml b/pom.xml
index 065fd11..19ee436 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
   <groupId>com.googlesource.gerrit.plugins.rabbitmq</groupId>
   <artifactId>rabbitmq</artifactId>
   <packaging>jar</packaging>
-  <version>1.3-SNAPSHOT</version>
+  <version>1.4-SNAPSHOT</version>
   <name>Gerrit RabbitMQ plugin</name>
 
   <licenses>