Fixed pom.xml

pom.xml

@@ -111,6 +111,12 @@
       <type>jar</type>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+        <groupId>commons-lang</groupId>
+        <artifactId>commons-lang</artifactId>
+        <version>2.3</version>
+        <scope>provided</scope>
+    </dependency>
     <!-- testing -->
     <dependency>
       <groupId>junit</groupId>