Stupid CGI script for adding feeds

Works with the RSS subscription extension from
https://chrome.google.com/webstore/detail/rss-subscription-extensio/nlbjncdgjeocebhnmkbbbdekmmmcbfjd

To configure: click on the orange RSS icon in the location bar, choose
Settings, choose Add..., specify

  Description: Planet Mg
  URL: http://gedmin.as/planet/add?url=%s