使用cocoapods时，pod install出现

出现：
[!] Your Podfile has had smart quotes sanitised. To avoid issues in the future, you should not use TextEdit for editing it. If you are not using TextEdit, you should turn off smart quotes in your editor of choice.

是使用了文本编辑器编辑了Podfile文件，这时用XCode打开就可以了，终端命令：
open -a Xcode Podfile