Update README.md

Author: NghiaTranUIT

README.md

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 A little and powerful iOS framework for intercepting HTTP/HTTPS Traffic from your app. No more messing around with proxy, certificate config. 
 
 [![Version](https://img.shields.io/cocoapods/v/atlantis-proxyman.svg?style=flat)](https://cocoapods.org/pods/atlantis-proxyman)
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
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 [![Join the chat at https://gitter.im/Proxyman-app/community](https://badges.gitter.im/Proxyman-app/community.svg)](https://gitter.im/Proxyman-app/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)