Update README.md

Author: ckundo

README.md

@@ -31,6 +31,9 @@ set up and endpoint with that path, you can log the errors on the server too.
 See [AccessLint::Rails](https://github.com/thoughtbot/access_lint-rails) for a
 Rails implementation of server side logging of accessibility errors.
 
+![animated screencapture of accesslint warnings to the console](https://cloud.githubusercontent.com/assets/108163/15450990/693ce7e4-1f7c-11e6-8778-6a6aced77679.gif)
+
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 ## Development
 
 AccessLint Monitor uses babel and webpack to transpile and package ES2015