Added a sponsors section to the readme:

Author: Linda Peng

README.md

@@ -30,6 +30,14 @@ npm run test
 
 We are building out a new platform (CBV3) to replace an [older MeteorJS project](http://github.com/codebuddies/codebuddies) which currently runs the [codebuddies.org site](<(https://codebuddies.org/)>).
 
+## Sponsors
+
+Big thanks to the sponsors of this project!
+
+<a href="https://gitduck.com/codebuddies/join?t=60ktFkh1Rqnd_AS1kR8ZGyH" target="_blank"><img src="https://opencollective-production.s3.us-west-1.amazonaws.com/f6e3fd10-bfd4-11ea-991a-c3d30978b44b.png" width="200" alt="GitDuck"/>
+
+<a href="https://netlify.com" target="_blank"><img src="https://user-images.githubusercontent.com/4512699/66627175-ba5d6d80-ebaf-11e9-8a78-554e3e8a4987.png" width="200" alt="Netlify"/>
+
 ## Role of the front-end
 
 The front-end is a React app that aims to let users at a bare minimum: