Document how to get dev server running

Author: MasterKale

README.md

@@ -1,3 +1,18 @@
 # passkeys.dev
 
 docs coming soon
+
+## Development
+
+The following dependencies are required to work on passkeys.dev locally:
+
+- Hugo v0.140.x
+- Golang 1.23.x
+
+Once these are installed, run the following command to start the dev server:
+
+```
+hugo server
+```
+
+The site will be available locally at http://localhost:1313.