Enable Gzip

To Compress every js and css files and generate a gzipped version (gzip option doesn't remove input file): 

<project>
...
  <build>
    <plugins>
...
      <plugin>
        <groupId>net.alchim31.maven</groupId>
        <artifactId>yuicompressor-maven-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>compress</goal>
            </goals>
          </execution>
        </executions>        
        <configuration>
          <gzip>true</gzip>
        </configuration>
      </plugin>
...
    </plugins>
  </build>
...
</project>