title: Using git submodules with xCode projects
body: <p>I have a project (A), which is partially used as a submodule for another project (B). Both projects are under development.
  Part of sources from submodule (A) added to my parent project (B) as links, without copying, so I can update thus files with <code>git pull</code> from directory with submodule.</p>
  
  <ul>
  <li>Q1: Is it a normal workflow, to use submodules in such way?  </li>
  <li>Q2: Is there way to automate adding of new files to A, so them automatically
  become parts of B?</li>
  <li>Q3: I have issues after removing submodule code - all its parts displayed as absent in xCode, although everything is compiling and works fine.</li>
  </ul>