Add the bintray repository for Maven protoc-plugin in the example
diff --git a/README.md b/README.md
index b7f3f2f..40645c3 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,23 @@
For protobuf-based codegen integrated with the Maven build system, you can use
[maven-protoc-plugin][]:
```xml
+<pluginRepositories>
+ <pluginRepository>
+ <releases>
+ <updatePolicy>never</updatePolicy>
+ </releases>
+ <snapshots>
+ <enabled>false</enabled>
+ </snapshots>
+ <id>central</id>
+ <name>Central Repository</name>
+ <url>https://repo.maven.apache.org/maven2</url>
+ </pluginRepository>
+ <pluginRepository>
+ <id>protoc-plugin</id>
+ <url>https://dl.bintray.com/sergei-ivanov/maven/</url>
+ </pluginRepository>
+</pluginRepositories>
<build>
<extensions>
<extension>