[!] Unable to determine Swift version for the following pods:
- `install_plugin` does not specify a Swift version and none of the targets (`Runner`) integrating it have the `SWIFT_VERSION` attribute set. Please contact the
author or set the `SWIFT_VERSION` attribute in at least one of the targets that integrate this pod.
在OC项目中新建一个swift文件，会提示是否创建swift桥接文件，选择Create Bridging Header；
