Set document.title to the project path when the last editor is closed

src/app/root-view.coffee

@@ -31,6 +31,8 @@ class RootView extends View
       if @editors().length
         @activeEditor().focus()
         false
+      else
+        @setTitle(@project?.path)
 
     @commandPanel = new CommandPanel({rootView: this})
 
@@ -42,8 +44,6 @@ class RootView extends View
     else if not panesViewState?
       @activeEditor().setBuffer(new Buffer)
 
-    @setTitle(@project?.path)
-
     @deserializePanes(panesViewState) if panesViewState
 
   serialize: ->