title: How to get user details using twitter api v1.1 (Twitter error 215)
body: <p>I have used the twitter api provided by twitter,to get the details but
  not able to execute it, even tried to pass the authentication data
  like consumer secret key, consumer key, token but the result is same.<br>
  I am able to login and receiving twitter authentication token but not able to get user details.
  Below code is used by me (I am using MGtwitter engine) :</p>
  
  <pre><code>NSMutableURLRequest *request =[[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@",username]]];
  
  NSData *returnData = [ NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil ];
  
  NSString *returnString = [[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
      NSError *err = nil;
  
  twitterLogin = [NSJSONSerialization JSONObjectWithData:[returnString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&amp;err];
  </code></pre>
  
  <p>Error is shown as below:</p>
  
  <pre><code>errors = (
  {
      code = 215;
      message = "Bad Authentication data";
  } );
  </code></pre>