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document/implementation/README.md

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+# Web-based Cloud Gaming Service Implementation Document
+
+## Code structure
+.
+├── cmd
+│   ├── main.go
+│   └── main_test.go
+├── emulator: emulator internal
+│   ├── director.go: coordinator of views
+│   └── gameview.go: in game logic
+├── overlord: coordinator of workers
+├── games: roms list, no code logic
+├── static: static file for front end
+│   ├── js
+│   │   └── ws.js: client logic
+│   ├── gameboy.html: frontend with gameboy ui
+│   └── index_ws.html: raw frontend without ui
+├── cws
+│   └── cws.go: socket multiplexer library, used for signalling
+├── webrtc
+└── worker: integration between emulator + webrtc (communication) 
+