Remove @JavaScriptBot from commands' responses

lib/index.js

@@ -144,6 +144,7 @@ export default class Bot extends EventEmitter {
         // Commands are sent in /command@thisusername format in groups
         const regex = new RegExp(`@${this.info.username}$`);
         text = text.replace(regex, '');
+        res.message.text = text;
       }
 
       let ev = this._userEvents.find(({pattern}) => pattern.test(text));