title: How to use autoLayout to self-sizing cell when there is a tableview in the cell?
body: <p>I can not confirm the embed <code>tableView</code>'s height.
  I use the self-sizing cell in the embed tableView, so I think the embed <code>tableView</code> will know it's height itself.So I make a constraint like this:</p>
  
  <pre><code>    [tableView remakeConstraints:^(MASConstraintMaker* make) {
          make.top.equalTo(wkself.feedView.bottom);
          make.left.equalTo(wkself.userNameLabel);
          make.width.equalTo(@(TQ_FEEDBACK_TABLEVIEW_WIDTH));
          make.height.greaterThanOrEqualTo(@0);
          make.bottom.equalTo(self.contentView.bottom).offset(-10);
      }];
  </code></pre>
  
  <p>but this result is that the embed <code>tableView</code>'s height is always 0.I don't know how to deal with this.</p>
  
  <p>what's more, if the embed tableView have <code>tableHeaderView</code> or <code>tableFooterView</code>, how do I deal with this? </p>