added compiler verson to pom

Author: daniel-sanche

cdn/signed-urls/pom.xml

@@ -21,6 +21,8 @@
   <url>http://maven.apache.org</url>
 
   <properties>
+    <maven.compiler.target>1.7</maven.compiler.target>
+    <maven.compiler.source>1.7</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>