Update maven-resources-plugin to 2.6 to work with m2e

pom.xml

@@ -236,7 +236,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-resources-plugin</artifactId>
-                <version>2.2</version>
+                <version>2.6</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>