title: How to bind dynamic views in a fragment?
body: <p>I'm using butterknife in a fragment.  I have 2 two ViewPagers which are in the <code>header.xml</code>. 
  And I don't want to use <code>findViewById()</code> to instantiate them. 
  I tried to use <code>ButterKnife.bind(this,header)</code>, but it doesn't allow me to bind twice. Is there a way to solve this case?  </p>
  
  <p>(sorry for my poor expression,English is not my native language)</p>
  
  <pre><code> public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
          View inflate = inflater.inflate(R.layout.fragment_a, null);
          ButterKnife.bind(this, inflate);
  
          View header = LayoutInflater.from(getActivity()).inflate(R.layout.header, null);
          mPagerMenu = (ViewPager) header.findViewById(R.id.pager_menu);
          mPagerAd = (ViewPager) header.findViewById(R.id.pager_ad);
  
          return inflate;
      }
  </code></pre>