Add Thiago Andrade to the list of contributors for his contributions via github.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1592812 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index eb6d206..14116f6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -460,6 +460,9 @@
     <contributor>
       <name>Michael Osipov</name>
     </contributor>
+    <contributor>
+      <name>Thiago Andrade</name>
+    </contributor>
   </contributors>
 
   <!-- Lang should depend on very little -->