I have Android Studio with Flutter plugin installed.
Flutter SDK is also installed on my Mac through Android Studio and I know path to it.

I want to run my app in release mode on real iOS device. Not only to hide "slow mode" banner that can be done using this code as I know

```
new MaterialApp(
  debugShowCheckedModeBanner: false,
  ...

```

but also to check how my app works.

I found this instructions <https://flutter.io/ios-release/> but still can't build app in release mode.

Each time I try to run flutter command in terminal, I got:

> 
> flutter: command not found
> 
> 
> 

I think that it is because I had installed Flutter SDK from Android Studio and I should update some pathes.
So what are my steps to build flutter app in release mode using Xcode?