Window state works now

The state is now stored in ~/.atom/.storage/SHA-OF-PATH. It is written
to every time it is set.

spec/spec-helper.coffee

@@ -38,7 +38,6 @@ beforeEach ->
 
   window.resetTimeouts()
   atom.packageStates = {}
-  spyOn(atom, 'saveWindowState')
   spyOn(atom, 'getSavedWindowState').andReturn(null)
   $native.setWindowState('')
   syntax.clearGrammarOverrides()