Add build section to README
diff --git a/README.md b/README.md
index 58c2018..befdb25 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,11 @@
 
 Now available for Gerrit 2.8 only, but you may use this on another version of Gerrit if you modify `Gerrit-ApiVersion` in pom.xml.
 
+BUild
+---------------------
+
+  mvn package
+
 License
 ---------------------