📝 Fix an outdated license badge in the readme

README.md

@@ -1,6 +1,6 @@
 ![](https://raw.githubusercontent.com/ct-js/ct-js/develop/branding/GithubHeader.png)
 
-![](https://img.shields.io/badge/license-GPL--3-informational?style=flat-square) ![GitHub tag (latest by date)](https://img.shields.io/github/tag-date/ct-js/ct-js?label=version&style=flat-square) ![Travis (.org) branch](https://img.shields.io/travis/ct-js/ct-js/master?style=flat-square) ![Travis (.org) branch](https://img.shields.io/travis/ct-js/ct-js/develop?label=dev%20build&style=flat-square)
+![](https://img.shields.io/badge/license-MIT-informational?style=flat-square) ![GitHub tag (latest by date)](https://img.shields.io/github/tag-date/ct-js/ct-js?label=version&style=flat-square) ![Travis (.org) branch](https://img.shields.io/travis/ct-js/ct-js/master?style=flat-square) ![Travis (.org) branch](https://img.shields.io/travis/ct-js/ct-js/develop?label=dev%20build&style=flat-square)
 
 [![](https://img.shields.io/discord/490052958310891520?style=flat-square&logo=discord&logoColor=white)](https://discord.gg/CggbPkb) ![GitHub issues by-label](https://img.shields.io/github/issues/ct-js/ct-js/state:to%20do?style=flat-square&label=todo%20issues) ![GitHub issues by-label](https://img.shields.io/github/issues/ct-js/ct-js/state:current%20release?style=flat-square&label=current%20release%20issues)
  ![GitHub issues by-label](https://img.shields.io/github/issues/ct-js/ct-js/help%20wanted?style=flat-square&label=help%20wanted)