fix error

Podfile

@@ -23,6 +23,7 @@ target 'Introduce' do
   pod "BFUIKit",              :git => 'https://git.yishihui.com/iOS/BFUIKit.git'
   pod "BFAliyunNlsSDK-Swift", :git => 'https://git.yishihui.com/iOS/BFAliyunNlsSDK-Swift.git'
   pod "BFVideoEditKit",       :git => 'https://git.yishihui.com/iOS/BFVideoEditKit.git'
+  pod "BFRecordScreenKit",    :git => 'https://git.yishihui.com/iOS/BFRecordScreenKit.git'