Add sponsors

Author: mnapoli

.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: [mnapoli, GrahamCampbell] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+custom: 'https://bref.sh/#enterprise' # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.npmignore

@@ -12,3 +12,4 @@
 /test
 /VERSIONING.md
 !/lib/plugins/create/templates/**/.gitignore
+/docs

README.md

@@ -6,6 +6,18 @@ The Serverless Framework is a command-line tool with an easy and approachable YA
 
 This repository is a maintained alternative to [Serverless Framework](https://github.com/serverless/serverless) v3. It exists for those that cannot upgrade to Serverless Framework v4 and is a drop-in replacement for v3.
 
+## Open-source sponsors
+
+<p align="center">
+<a href="https://www.voxie.com/"><img src="docs/sponsors/voxie.svg" width="150px" /></a>
+&nbsp; &nbsp; &nbsp; &nbsp;
+<a href="https://optionmetrics.com/"><img src="docs/sponsors/optionmetrics.png" width="300px" /></a>
+&nbsp; &nbsp; &nbsp; &nbsp;
+<a href="https://www.mybuilder.com/"><img src="docs/sponsors/mybuilder.svg" width="210px" /></a>
+</p>
+
+This project is open-source and free to use. However, maintaining it requires time and effort. If you want to support the project, you can become a sponsor on GitHub Sponsors.
+
 ## Installation
 
 ```sh