title: showing project folder in title bar for Visual Studio Code
body: <p>Is it possible to show the last folder in the title bar?  If you have multiple instances of VS Code open, it is difficult to distinguish between them from the task bar.  If both instances are open on say a file called 'main.ts', you will see 'main.ts' in the taskbar item.</p>
  
  <p>Currently, the title would be <code>[filename open] - [folder open]</code> (e.g <code>main.ts - angular2-training</code>. Is it possible to invert them to become <code>[folder open] - [filename open]</code> (e.g <code>angular2-training - main.ts</code>?</p>