title: Deployment target vs. base SDK with TWTweetComposeViewController
body: <p>I have set my base SDK to 6.0 and my Deployment Target to 6.0.</p>
  
  <p>When I build, I get the following error. 
  'TWTweetComposeViewController' is deprecated: first deprecated in iOS 6.0</p>
  
  <p>If I drop my Deployment Target down to 5.1 it compiles without error.  Since TWTweetComposeViewController is "Available in iOS 5.0 and later.", this seems opposite to what I was expecting.</p>
  
  <p>I would just leave it like that but I am also using Social/Social.h which is only available in 6.0 and up and will be error prone for the 5.1 users.</p>
  
  <p>This is the problematic line of code:</p>
  
  <pre><code>if ([TWTweetComposeViewController canSendTweet]){
  </code></pre>
  
  <p>Racking my brain on this.  I'm hoping it is just some obscure setting I have missed.</p>
  
  <p>Thanks in advance.</p>