Update pom.xml

Add maven-javadoc plugin

Author: richardwilly98

pom.xml

@@ -357,7 +357,20 @@
 </execution>
 </executions>
 </plugin>
-<plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <version>2.9.1</version>
+ <executions>
+ <execution>
+ <id>attach-javadocs</id>
+ <goals>
+ <goal>jar</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
 <artifactId>maven-assembly-plugin</artifactId>
 <version>2.3</version>
 <configuration>