doc: update README.md for Contributing

README.md

@@ -23,3 +23,11 @@ Read the [QuickStart](doc/quick_start_en.md) | [使用文档](doc/quick_start_zh
 * Expose any http service behind a NAT or firewall to the internet by a server with public IP address.
 * Expose any tcp service behind a NAT or firewall to the internet by a server with public IP address.
 * Inspect all http requests/responses that are transmitted over the tunnel(future).
+
+## Contributing
+
+Interested in getting involved? We would love to help you!
+
+For simple bug fixes, just submit a PR with the fix and we can discuss the fix directly in the PR. If the fix is more complex, start with an issue.
+
+If you have some wanderful ideas, send email to fatedier@gmail.com.