Update README.md

README.md

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 # LuaShiftOut
 
-Port of the Arduino shiftOut function.
+[![MIT License](https://img.shields.io/github/license/serega404/LuaShiftOut)](https://github.com/serega404/LuaShiftOut/blob/main/LICENSE)
+
+Port of the Arduino shiftOut function.
+
+## Installation <sub><sup>(for rasbian and debian-based)</sup></sub>
+
+``` bash
+sudo apt install luarocks lua-bitop
+sudo luarocks install lua-periphery
+```
+
+## Usage
+
+``` lua
+require("shiftOut")
+
+register = shiftOut:new(LatchPin, DataPin, ClockPin)
+
+register:shiftOut("11000000") -- string value
+register:shiftOut(192) -- decimal digit value
+```
+
+## Modules
+
+* [lua-periphery](https://github.com/vsergeev/lua-periphery)
+* [BitOp](http://bitop.luajit.org/)
+
+## Contributing
+
+Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Feel free to contribute to this project.
+
+## License
+
+Distributed under the MIT License. See [`LICENSE`](./LICENSE) for more information.