title: react-native-fbsdk - how to get user profile?
body: <p>onLoginFinished's result just tells me the granted permissions. From the <a href="https://github.com/facebook/react-native-fbsdk" rel="noreferrer">repo</a>, not clear how to get the user profile. Seems like react-native-fbsdkcore should wrap FBSDKProfile.h but don't see where it does.    </p>
  
  <pre><code> var FBSDKLogin = require('react-native-fbsdklogin');
      var {
        FBSDKLoginButton,
      } = FBSDKLogin;
  
      var Login = React.createClass({
        render: function() {
          return (
            &lt;View&gt;
              &lt;FBSDKLoginButton
                onLoginFinished={(error, result) =&gt; {
                  if (error) {
                    alert('Error logging in.');
                  } else {
                    if (result.isCanceled) {
                      alert('Login cancelled.');
                    } else {
                      alert('Logged in.');
                    }
                  }
                }}
                onLogoutFinished={() =&gt; alert('Logged out.')}
                readPermissions={[]}
                publishPermissions={['publish_actions']}/&gt;
            &lt;/View&gt;
          );
        }
      });
  </code></pre>