Update Resin 4 on README
Fix
@@ -54,6 +54,7 @@ Running JPetStore sample under Tomcat (using the [cargo-maven2-plugin](https://c
> * tomee : Running under the TomEE 7
> * wildfly : Running under the WildFly 10
> * jetty : Running under the Jetty 9
+ > * resin : Running under the Resin 4
>
> ```
> $ mvn cargo:run -P tomcat90
