Add License.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271587 13f79535-47bb-0310-9956-ffa450edef68

proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/ChainableReader.java

@@ -55,6 +55,11 @@ package org.apache.tools.ant.filters;
 
 import java.io.Reader;
 
+/**
+ * Chains readers.
+ *
+ * @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
+ */
 public interface ChainableReader {
     public Reader chain(Reader rdr);
 }