title: how can i get twitter lists information (subscribe information)
body: <p>i saw some example code for finding members of list.
  so i changed it slightly and converged for fit to me, however it doesn't work</p>
  
  <pre><code>screen_name &lt;-"Newsminster" 
  api.url &lt;- paste0("https://api.twitter.com/1.1/lists/list.json?","screen_name=", screen_name)
  
  url.get=GET(api.url)
  url.content=content(url.get, as="text")
  </code></pre>
  
  <p>output : </p>
  
  <blockquote>
    <p>url.content
    [1] "{\"errors\":[{\"code\":215,\"message\":\"Bad Authentication data.\"}]}"</p>
  </blockquote>