add missing license header

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@398112 13f79535-47bb-0310-9956-ffa450edef68

contrib/analyzers/src/test/org/apache/lucene/analysis/cn/TestChineseTokenizer.java

@@ -1,5 +1,21 @@
 package org.apache.lucene.analysis.cn;
 
+/**
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * 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 java.io.IOException;
 import java.io.StringReader;
 
@@ -28,4 +44,4 @@ public class TestChineseTokenizer extends TestCase
             correctEndOffset++;
         }
     }
-}
+}