[ZEPPELIN-715]Provide version information (add ASF licenses, fix style)

zeppelin-server/src/main/java/org/apache/zeppelin/utils/CommandLineUtils.java

@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
 package org.apache.zeppelin.utils;
 
 import org.apache.zeppelin.util.Util;
@@ -14,13 +30,12 @@ public class CommandLineUtils {
     }
 
     String usage = args[0].toLowerCase(Locale.US);
-    switch (usage) {
-      case "-version":
-      case "-v":
-        System.out.println(Util.getVersion());
-        break;
-
-      default:
+    switch (usage){
+        case "-version":
+        case "-v":
+          System.out.println(Util.getVersion());
+          break;
+        default:
     }
   }
 }