Add subscription key as additional parameter to result callback, #445

Author: fnoop

src/smart-subscription.js

@@ -56,7 +56,7 @@ export default class SmartSubscription extends SmartApollo {
     super.nextResult(data)
 
     if (typeof this.options.result === 'function') {
-      this.options.result.call(this.vm, data)
+      this.options.result.call(this.vm, data, this.key)
     }
   }
 }