Update README.md

Added badge MIT License

Author: CoderJava

README.md

@@ -1,6 +1,7 @@
 [![Codemagic build status](https://api.codemagic.io/apps/5e93249b1838ac3d3e52a5bc/5e93249b1838ac3d3e52a5bb/status_badge.svg)](https://codemagic.io/apps/5e93249b1838ac3d3e52a5bc/5e93249b1838ac3d3e52a5bb/latest_build)
 [![codecov](https://codecov.io/gh/CoderJava/Flutter-News-App/branch/dev-v2.0.0/graph/badge.svg)](https://codecov.io/gh/CoderJava/Flutter-News-App)
 [![style: effective dart](https://img.shields.io/badge/style-effective_dart-40c4ff.svg)](https://github.com/tenhobi/effective_dart)
+[![License: MIT](https://img.shields.io/badge/license-MIT-purple.svg)](https://opensource.org/licenses/MIT)
 
 # Flutter News App
 News App developed with Flutter and API from [News API](https://newsapi.org)