message: add convo.context.script_name for botkit studio powered scripts
diff: @@ -366,6 +366,9 @@ module.exports = function(controller) {
  return reject(err);
  }
  + // make the script name available
  + convo.context.script_name = command_name;
  +
  // 15 minute default timeout
  convo.setTimeout(controller.config.default_timeout || (15 * 60 * 1000));
  