def versions(name, options = {})
      ensure_ready!(:authorization)
      url = "gems/#{escape(name)}/versions"
      response = connection.get(url, options)
      checked_response_body(response)
    end
def versions(name, options = {})
      ensure_ready!(:authorization)
      url = "gems/#{escape(name)}/versions"
      response = connection.get(url, options)
      checked_response_body(response)
    end
List versions for a gem