docs: update badges

Author: daviddias

README.md

@@ -6,9 +6,9 @@
 
 <p align="center">
   <a href="http://ipn.io"><img src="https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square" /></a>
-  <a href="http://libp2p.io/"><img src="https://img.shields.io/badge/project-libp2p-blue.svg?style=flat-square" /></a>
-  <a href="http://webchat.freenode.net/?channels=%23ipfs"><img src="https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat-square" /></a>
-  <a href="https://waffle.io/libp2p/libp2p"><img src="https://img.shields.io/badge/pm-waffle-blue.svg?style=flat-square" /></a>
+  <a href="http://libp2p.io/"><img src="https://img.shields.io/badge/project-libp2p-yellow.svg?style=flat-square" /></a>
+  <a href="http://webchat.freenode.net/?channels=%23libp2p"><img src="https://img.shields.io/badge/freenode-%23libp2p-yellow.svg?style=flat-square" /></a>
+  <a href="https://waffle.io/libp2p/libp2p"><img src="https://img.shields.io/badge/pm-waffle-yellow.svg?style=flat-square" /></a>
 </p>
 
 <p align="center">