I have created a one click deploy button for railway users 🧙‍♂️ (we-promise#228)

* Add Railway deployment button to README

Signed-off-by: Marc <[email protected]>

Author: MarcBlattmann

README.md

@@ -86,6 +86,10 @@ For further instructions, see guides below.
 - [Windows dev setup](https://github.com/we-promise/sure/wiki/Windows-Dev-Setup-Guide)
 - Dev containers - visit [this guide](https://code.visualstudio.com/docs/devcontainers/containers)
 
+### One click deploys
+
+[![Deploy on Railway](https://railway.com/button.svg)](https://railway.com/deploy/sure?referralCode=CW_fPQ)
+
 ## License and Trademarks
 
 Maybe and Sure are both distributed under