message: Update Core ML delegate instruction
  Currently, `TensorFlowLiteSwift:0.0.1-nightly` has only one version, and CocoaPods will use cached version without Core ML delegate. `pod cache clean` ensures the cache is refreshed, so that new version of `TensorFlowLiteSwift` can be downloaded.
diff: @@ -32,7 +32,8 @@ target 'YourProjectName'
  pod 'TensorFlowLiteSwift', '~> 0.0.1-nightly'
  ```
  -Note: After updating `Podfile`, you should run `pod update` to reflect changes.
  +Note: After updating `Podfile`, you should run `pod cache clean` and `pod
  +update` to reflect changes.
  ### Swift
  