commandDispatcher: add support for sending a reaction instead of a message

src/lib/commandDispatcher.js

@@ -88,6 +88,9 @@ async function CommandDispatcher(msg) {
         file = response.file;
         delete response.file;
       }
+      if (response.reaction) {
+        msg.addReaction(response.reaction);
+      } else {
         msg.channel
           .createMessage(
             Object.assign(
@@ -115,6 +118,7 @@ async function CommandDispatcher(msg) {
             });
           });
       }
+    }
     msg.hasRan = true;
   }
 }