docs: update readme

readme.md

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 # i18n-format
 
+**i18n-format** is a multi-language conversion library for formatting data, supporting singular-plural conversion,
+natural language number and Arabic number conversion, date, etc.
+
+## Features
+
+- **word2number**: Conversion between natural language numbers and Arabic numbers, and also supports conversion of
+  numbers in different languages
+- **plural**: Singular to plural conversion
+- **date**: Natural language representation of dates and times
+
+## i18n-format language support
+
+| lang  | word2number | plural | date |
+|-------|:-----------:|:------:|:----:|
+| en    |      ✅      |   ❌    |  ❌   |
+| zh_CN |      ❌      |   ❌    |  ❌   |
+| zh_TW |      ❌      |   ❌    |  ❌   |
+| ja    |      ❌      |   ❌    |  ❌   |
+
+## Building
+
+- Install CMake
+- Install Python
+- Ensure CMake and Python are in the user PATH
+- Visual Studio: run `build.bat` from the command prompt
+- Otherwise: run `build.sh` from a bash shell
+- Results are in the build sub-folder
+- On Windows you can open i18n_format.sln
+
+## Documentation
+
+[Manual]()
+
+## Contributing
+I18n-format welcomes users of different languages to contribute relevant implementations of their own languages.
+
+## License
+
+i18n-format is developed by stark233 and I18n-format contributors the MIT license.