Add Bitbucket to README

Author: joeybloggs

README.md

@@ -5,7 +5,7 @@ Library webhooks
 [![Coverage Status](https://coveralls.io/repos/go-playground/webhooks/badge.svg?branch=v1&service=github)](https://coveralls.io/github/go-playground/webhooks?branch=v1)
 [![GoDoc](https://godoc.org/gopkg.in/go-playground/webhooks.v1?status.svg)](https://godoc.org/gopkg.in/go-playground/webhooks.v1)
 
-Library webhooks allows for easy recieving and parsing of GitHub Webhook Events; more services to come i.e. BitBucket...
+Library webhooks allows for easy recieving and parsing of GitHub & Bitbucket Webhook Events
 
 Features: