add references

README.md

@@ -21,3 +21,8 @@ Create new host for nginx reverse proxy
 ```shell
 sh -c "$(curl -fsSL https://git.felinn.org/FELINN/tools/nginx-new-host/raw/master/nginx-new-host.sh)"
 ```
+
+# References
+
+* https://wiki.mozilla.org/Security/Guidelines/Web_Security
+* https://observatory.mozilla.org/