Update README.md

Author: sbabcoc

README.md

@@ -92,8 +92,8 @@ The hooks that enable **JUnit Foundation** test lifecycle notifications are inst
           <artifactId>maven-compiler-plugin</artifactId>
           <version>${compiler-plugin.version}</version>
           <configuration>
-            <source>1.6</source>
-            <target>1.6</target>
+            <source>1.8</source>
+            <target>1.8</target>
           </configuration>
         </plugin>
         <plugin>