Added jdk.version property.

pom.xml

@@ -31,6 +31,7 @@
     </developers>
 
 	<properties>
+		<jdk.version>1.6</jdk.version>
 		<jersey.version>1.18</jersey.version>
 		<jackson.version>1.9.13</jackson.version>
 		<junit.version>4.9</junit.version>
@@ -75,8 +76,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.1</version>
 				<configuration>
-					<source>1.6</source>
-					<target>1.6</target>
+					<source>${jdk.version}</source>
+					<target>${jdk.version}</target>
 				</configuration>
 			</plugin>
 		</plugins>