Merge branch 'master' of github.com:knadh/listmonk

README.md

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 ### Heroku 
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-Using the [Nginx buildpack](https://github.com/heroku/heroku-buildpack-nginx) can be used to deploy listmonk on Heroku and use Nginx as a proxy to setup basicauth. 
-This one-click [Heroku deploy button](https://github.com/bumi/listmonk-heroku) provides an automated default deployment.
-
-[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/bumi/listmonk-heroku)
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-Please note that [configuration options](https://listmonk.app/docs/configuration) must be set using [environment configuration variables](https://devcenter.heroku.com/articles/config-vars).
-
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/knadh/listmonk-heroku)
 
 
 ## Developers