func Hello(env mango.Env) (mango.Status, mango.Headers, mango.Body) {
// to add a session attribute just add it to the map
env.Session()["new_session_attribute"] = "Never Gonna Give You Up"
// To remove a session attribute delete it from the map
env.Session()["old_session_attribute"] = nil, false
return 200, mango.Headers{}, mango.Body("Hello World!")
}
