Fixed minor Javadoc errors

src/main/java/envoy/client/LocalDB.java

@@ -47,7 +47,7 @@ public class LocalDB {
 	/**
 	 * Constructs an empty local database.
 	 *
-	 * @param client the user that is logged in with this client
+	 * @param sender the user that is logged in with this client
 	 * @since Envoy v0.1-alpha
 	 */
 
@@ -117,7 +117,9 @@ public class LocalDB {
 	 * Creates a {@link Message} object serializable to XML.
 	 * 
 	 * @param textContent The content (text) of the message
+	 * @param recipient The recipient of the message
 	 * @return prepared {@link Message} object
+	 * @since Envoy v0.1-alpha
 	 */
 	public Message createMessage(String textContent, User recipient) {
 		Message.Metadata metaData = objectFactory.createMessageMetadata();