Revert to compile version 3.1, as I get a failure while runing mvn deplay with 3.3
diff --git a/pom.xml b/pom.xml
index e0c3a8a..45b6bb4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -108,7 +108,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
-          <version>3.3</version>
+          <version>3.1</version>
           <configuration>
             <source>1.7</source>
             <target>1.7</target>