title: Import swift iOS project to another project
body: <p>Im really sucked, and didn't find any information what can help me.</p>
  
  <p>So:</p>
  
  <p>I have a project, named ProjectA. This is the main project. 
  I would like to import to ProjectA one open source swift game, named projectB. ProjectB has workspace file, while projectA doesn't. </p>
  
  <p>After that, I would like to call the projectB's Main.storyboard from projectA's storyboard trough a storyboard reference. </p>
  
  <p>I tried everything, target dependencies, import, same workspace, etc..</p>