add heroku to readme

README.md

@@ -23,13 +23,31 @@ The code allows the creation of multiservice chats, service bots, or any other s
 
 To install the SSL certificate, follow the **[instructions](https://certbot.eff.org/instructions?ws=other&os=ubuntufocal)** below.
 
+## Installation
+
+### Self-hosted (VPS)
+
+For self-hosted installation, you will need a VPS with at least 2GB of RAM and 2vCPU. The installation process is simple, just follow the steps below.
+<https://doc.evolution-api.com/help-center/articles/7/introduction#important-recomentations>
+
+<!-- RECOMEND https://hetzner.cloud/?ref=E1AsUeCv1soz -->
+We recommend using the [Hetzner](https://hetzner.cloud/?ref=E1AsUeCv1soz) cloud service, which offers a 20 EUR credit for new accounts and helps the project with a small commission.
+
+### Heroku Button
+
+Automatically deploy to Heroku with the button below. You will need to create a free account on Heroku to use this feature. Average cost of hosting on Heroku is $7/month.
+
+For use heroku you need to use a MongoDB database, you can use [MongoDB Atlas](https://www.mongodb.com/atlas) for free. Before deploying to Heroku, create a database and copy the connection string to `DATABASE_CONNECTION_URI` environment variable.
+
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy)
+
 # Note
 
 This code is in no way affiliated with WhatsApp. Use at your own discretion. Don't spam this.
 
 This code was produced based on the baileys library and it is still under development.
 
-# Donate to the project.
+# Donate to the project
 
 #### PicPay