Update README.md

Author: nicolas-chaulet

README.md

@@ -1,3 +1,5 @@
+This Repo is a fork of the original codebase that was created to support OpenAPI spec v3.1. The original motivation was to be able to support schema generated by [FastAPI](https://fastapi.tiangolo.com/) versions 0.100 and above.
+
 # OpenAPI Typescript Codegen
 
 [![NPM][npm-image]][npm-url]
@@ -15,6 +17,7 @@
 - Supports generation of TypeScript clients
 - Supports generations of Fetch, Node-Fetch, Axios, Angular and XHR http clients
 - Supports OpenAPI specification v2.0 and v3.0
+- Partial support of OpenAPI specification v3.1
 - Supports JSON and YAML files for input
 - Supports generation through CLI, Node.js and NPX
 - Supports tsc and @babel/plugin-transform-typescript
@@ -62,24 +65,3 @@ Documentation
 
 The main documentation can be found in the [openapi-typescript-codegen/wiki](https://github.com/ferdikoomen/openapi-typescript-codegen/wiki)
 
-Sponsors
-===
-
-If you or your company use the OpenAPI Typescript Codegen, please consider supporting me. By sponsoring I can free up time to give this project some love! Details can be found here: https://github.com/sponsors/ferdikoomen
-
-If you're from an enterprise looking for a fully managed SDK generation, please consider our sponsor:
-
-<a href="https://speakeasyapi.dev/?utm_source=ferdi+repo&utm_medium=github+sponsorship">
-    <img alt="speakeasy" src="https://storage.googleapis.com/speakeasy-design-assets/ferdi-sponsorship.png" width="640"/>
-</a>
-
-[npm-url]: https://npmjs.org/package/openapi-typescript-codegen
-[npm-image]: https://img.shields.io/npm/v/openapi-typescript-codegen.svg
-[license-url]: LICENSE
-[license-image]: http://img.shields.io/npm/l/openapi-typescript-codegen.svg
-[coverage-url]: https://codecov.io/gh/ferdikoomen/openapi-typescript-codegen
-[coverage-image]: https://img.shields.io/codecov/c/github/ferdikoomen/openapi-typescript-codegen.svg
-[downloads-url]: http://npm-stat.com/charts.html?package=openapi-typescript-codegen
-[downloads-image]: http://img.shields.io/npm/dm/openapi-typescript-codegen.svg
-[build-url]: https://circleci.com/gh/ferdikoomen/openapi-typescript-codegen/tree/master
-[build-image]: https://circleci.com/gh/ferdikoomen/openapi-typescript-codegen/tree/master.svg?style=svg