Add Caprine (jaywcjlove#604)

* Add Caprine

* Update README.md

README.md

@@ -491,6 +491,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 #### Collaboration and Team Tools
 
 * [Adium](https://adium.im/) - Free instant messaging application for Mac OS X. Connect to AIM, MSN, SMPP, Yahoo and more. ![Freeware][Freeware Icon]
+* [Caprine](https://github.com/sindresorhus/caprine) - Third-party privacy-focused Facebook Messenger app. ![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]
 * [DingTalk](https://www.dingtalk.com/en) - Free, powerful and professional office tool used by over 5 million enterprises and organizations globally. ![Freeware][Freeware Icon]
 * [Discord](https://discordapp.com/) - All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.
 * [Franz](http://meetfranz.com/) - [Electron](http://electron.atom.io/) based, multi-protocol wrapper for web-based chat. One application, 23 messenger services. ![Freeware][Freeware Icon]