Adapt to specification changes of twitter gem

`./rb/lumilly.rb`
 line:1 Change the key_token.rb path
    '../../key_token.rb' -> './key_token.rb'
 line:44 Added call option
    request = Net::HTTP::Get.new(uri.request_uri)
    -> request = Net::HTTP::Get.new(uri.request_uri, 'Accept-Encoding' => 'identity')
 line:368 Change the function of twitter gem configure
  Twitter.configure -> Twitter::REST::Client.new
  And
  @api = Twitter::REST::Client.new
  Maybe, original code was not works because I can't find
  to create instance for '@api'.
  So I modified.