Set a target java version to appease newer versions of mvn

Author: Ryan Graham

pom.xml

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <properties>
+      <maven.compiler.source>1.6</maven.compiler.source>
+      <maven.compiler.target>1.6</maven.compiler.target>
+    </properties>
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.raghusiddarth</groupId>
     <artifactId>spring-password</artifactId>