add configuration for gh-pages maven site

Author: thomas loubrieu

pom.xml

@@ -204,6 +204,31 @@ Go through this file line-by-line and replace the template values with your own.
             <artifactId>maven-site-plugin</artifactId>
             <version>3.9.1</version>
         </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-scm-publish-plugin</artifactId>
+          <version>3.1.0</version> <!-- or latest version -->
+          <configuration>
+            <pubScmUrl>${project.scm.developerConnection}</pubScmUrl>
+            <scmBranch>gh-pages</scmBranch>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>com.github.github</groupId>
+          <artifactId>site-maven-plugin</artifactId>
+          <version>0.11</version>
+          <configuration>
+             <message>Creating site for ${project.version}</message>
+          </configuration>
+          <executions>
+            <execution>
+              <goals>
+                <goal>site</goal>
+              </goals>
+              <phase>site</phase>
+            </execution>
+          </executions>
+        </plugin>
         <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-compiler-plugin</artifactId>