Added Copyright notice.

src/main/java/info/fetter/logstashforwarder/protocol/LumberjackClient.java

@@ -1,5 +1,22 @@
 package info.fetter.logstashforwarder.protocol;
 
+/*
+ * Copyright 2015 Didier Fetter
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
 import info.fetter.logstashforwarder.Event;
 
 import java.io.BufferedOutputStream;