Update branch for heroku quick deploy

Fixes #474

README.md

@@ -73,15 +73,17 @@ If using Heroku Quick Deploy, **you can skip this section**.
 There are a few different ways to begin using the app, depending on your preferences:
 
 ### A) [Heroku Quick Deploy](https://heroku.com/about)
-[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/benbusby/whoogle-search/tree/heroku-app-beta)
-
-*Note: Requires a (free) Heroku account*
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/benbusby/whoogle-search/tree/main)
 
 Provides:
 - Free deployment of app
 - Free HTTPS url (https://\<your app name\>.herokuapp.com)
 - Downtime after periods of inactivity \([solution](https://github.com/benbusby/whoogle-search#prevent-downtime-heroku-only)\)
 
+Notes: 
+- Requires a (free) Heroku account
+- Sometimes has issues with auto-redirecting to `https`. Make sure to navigate to the `https` version of your app before adding as a default search engine.
+
 ### B) [Repl.it](https://repl.it)
 [![Run on Repl.it](https://repl.it/badge/github/benbusby/whoogle-search)](https://repl.it/github/benbusby/whoogle-search)