Reformat README

Author: foxyblocks

README.md

@@ -1,6 +1,8 @@
-Bugsnag Notifier for JavaScript <img src="https://travis-ci.org/bugsnag/bugsnag-js.svg?branch=master" alt="build status" class="build-status">
+Bugsnag Notifier for JavaScript
 ===============================
 
+<img src="https://travis-ci.org/bugsnag/bugsnag-js.svg?branch=master" alt="build status" class="build-status">
+
 The Bugsnag Notifier for JavaScript gives you instant notification of errors and
 exceptions in your website's JavaScript code.