message: add component name to the warning
diff: @@ -6,8 +6,9 @@ const listenersInstances = [];
  export default (options) => ({
  inserted(el, binding, vnode) {
  if (! vnode.context.$validator) {
  + const name = vnode.context.$options._componentTag;
  // eslint-disable-next-line
  - warn(`No validator instance is present on this component ${vnode.context.$options.name}, did you forget to inject '$validator'?`);
  + warn(`No validator instance is present on ${name ?'component "' + name + '"' : 'un-named component'}, did you forget to inject '$validator'?`);
  return;
  }
  