Update README with digitalocean referral link

If you'd like to support me!

README.md

@@ -77,6 +77,8 @@ First, you want to get a server, for this guide, I will be using DigitalOcean as
 
 For instructions on how to get a server from start to finish, they are available on DigitalOcean's website directly from the community, available here: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-ubuntu-20-04-server-on-a-digitalocean-droplet. Ignore the part about setting up an "ssh key", and just use a password instead. 
 
+**Please sign up for a DigitalOcean account using my referral link if you'd like to support me https://m.do.co/c/e31eff1231a4**
+
 After you set up the server, the DigitalOcean GUI will give you an IP address, copy this IP address. Afterwards, you will need to SSH into the server. This can be done using a program such as "PuTTy", or by using your commandline, if it's supported. To login to the server, your username will be "root", your password will be the password that you defined earlier when setting up the droplet, and the IP address will be the IP address you copied after the droplet was finished creation.
 
 To connect with ssh, run the following command in terminal: