BuildCmd.md

just cmd for build, not env instruction

first, checkout the main.dart, select the entry version.

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Android apk build

1. cmd: flutter build apk
2. √ Built build\app\outputs\flutter-apk\app-release.apk (19.4MB).

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Windows exe

1. cmd: flutter build windows
2. √ Built build\windows\runner\Release\writing_writer.exe.

too old this way
## Windows exe
1. cmd: hover run
2. √  Built go/build/outputs/windows-debug_unopt/writing_writer.exe