Modify pom.xml to enable javadoc options.
Add some JavaDoc comments to LinkStorageImpl.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
index 50783c9..6e42771 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
@@ -22,6 +22,9 @@
 import com.tinkerpop.pipes.PipeFunction;
 import com.tinkerpop.pipes.transform.PathPipe;
 
+/**
+ * This is the class for storing the information of links into CassandraDB
+ */
 public class LinkStorageImpl implements ILinkStorage {
 	
 	protected static Logger log = LoggerFactory.getLogger(LinkStorageImpl.class);
@@ -126,7 +129,7 @@
 	}
 	
 	/**
-	 * Delete multiple records in the LinkStorage.
+	 * Delete multiple records in LinkStorage.
 	 * @param links List of records to be deleted.
 	 */
 	@Override