Merge pull request #3 from mar1u5/shields-for-irc

Use shields for IRC links

Author: LukasReschke

README.md

@@ -1,4 +1,6 @@
 # Nextcloud
+[![irc](https://img.shields.io/badge/IRC-%23nextcloud%20on%20freenode-orange.svg)](https://webchat.freenode.net/?channels=nextcloud)
+[![irc](https://img.shields.io/badge/IRC-%23nextcloud--dev%20on%20freenode-blue.svg)](https://webchat.freenode.net/?channels=nextcloud-dev)
 
 Please stay tuned while we get all the repositories up.