Exclude example from Sonar tests

acme4j-example/pom.xml

@@ -28,6 +28,11 @@
     <name>acme4j Example</name>
     <description>Example for using acme4j</description>
 
+    <properties>
+        <!-- I prefer readability over maintainability in the examples... -->
+        <sonar.skip>true</sonar.skip>
+    </properties>
+
     <build>
         <plugins>
             <plugin>