Redesign distributed calculator example, fix #501
Redesign distributed calculator example, fix #501

nq-ebaratte/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework,nq-ebaratte/actor-framework,actor-framework/actor-framework,nq-ebaratte/actor-framework,DavadDi/actor-framework,DavadDi/actor-framework,DavadDi/actor-framework,actor-framework/actor-framework,actor-framework/actor-framework,nq-ebaratte/actor-framework