title: MvvmCross ICommand for elements inside ListView item
body: <p>MvvmCross provides a beautiful way for handling user commands directly in ViewModel (which can be written only once in Core library).</p>
  
  <p>I can easily use the ICommand pattern for the whole list item, for example:</p>
  
  <pre><code>local:MvxBind="ItemsSource Contacts; ItemClick ShowContactCommand"
  local:MvxItemTemplate="@layout/item_contacts"
  </code></pre>
  
  <p>But what if I have a button in my item_contacts item layout? How can I bind the click on this button to a particular property in my ViewModel? (if possible, without writing any platform-specific code in the View class).</p>