Remove experimental wording

Author: Mark Pundsack

README.md

@@ -23,8 +23,7 @@ git push heroku master
 heroku open
 ```
 
-Alternatively, you can deploy your own copy of the app using this experimental
-web-based flow:
+Alternatively, you can deploy your own copy of the app using the web-based flow:
 
 [![Deploy to Heroku](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)