Add back a section that was previously mistakenly removed.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1606414 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

NOTICE.txt

@@ -7,3 +7,11 @@ The Apache Software Foundation (http://www.apache.org/).
 src/test/org/apache/commons/codec/language/DoubleMetaphoneTest.java
 contains test data from http://aspell.net/test/orig/batch0.tab.
 Copyright (C) 2002 Kevin Atkinson (kevina@gnu.org)
+
+===============================================================================
+
+The content of package org.apache.commons.codec.language.bm has been translated
+from the original php source code available at http://stevemorse.org/phoneticinfo.htm
+with permission from the original authors.
+Original source copyright:
+Copyright (c) 2008 Alexander Beider & Stephen P. Morse.