Merge pull request #10 from cyberkni/patch-1

Upgrade Apache Commons Collections to v3.2.2

pom.xml

       <dependency>
           <groupId>commons-collections</groupId>
           <artifactId>commons-collections</artifactId>
-          <version>3.2.1</version>
+          <version>3.2.2</version>
       </dependency>
       <dependency>
       <groupId>org.slf4j</groupId>