fixed mvn test compile

Author: sequoiar

pom.xml

@@ -11,6 +11,8 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<maven.compiler.source>1.7</maven.compiler.source>
+		<maven.compiler.target>1.7</maven.compiler.target>
 	</properties>
 
 	<dependencies>