Normalise paypal color, add PRs

Normalise the background A of the PayPal badge to match others
Add a new (closed) pull requests counter badge - Have made shields.io request to filter by add label in future

README.md

@@ -1,7 +1,8 @@
 [![JS.ORG Logo](http://logo.js.org/png/github_header.png)](http://js.org)
 
 [![JS.ORG](https://img.shields.io/badge/js.org-+-FFE70B.svg?style=flat-square)](http://js.org)
-[![Donate](https://img.shields.io/badge/Donate-for_registrar_fees-blue.svg?logo=paypal&colorA=777&style=flat-square)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=RPBWBDBKW62AC)
+[![Donate](https://img.shields.io/badge/Donate-for_registrar_fees-blue.svg?style=flat-square&logo=paypal)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=RPBWBDBKW62AC)
+[![PRs](https://img.shields.io/github/issues-pr-closed-raw/js-org/js.org.svg?style=flat-square&colorB=31a88b&label=Pull%20Requests)](https://github.com/js-org/js.org/pulls?q=is%3Apr+is%3Aclosed+label%3Aadd)
 
 **To get a short and sleek subdomain for your own GitHub Page follow these 4 Steps:**