Meta-w closes spec windows again.

This adds a 'core:close' event to meta-w in the default bindings, and modifies window to listen for it.

spec/app/window-spec.coffee

@@ -13,7 +13,7 @@ describe "Window", ->
   describe ".close()", ->
     it "is triggered by the 'close' event", ->
       spyOn window, 'close'
-      $(window).trigger 'close'
+      $(window).trigger 'core:close'
       expect(window.close).toHaveBeenCalled()
 
   describe ".reload()", ->

src/app/keymap.coffee

@@ -18,6 +18,7 @@ class Keymap
       'meta-n': 'new-window'
       'meta-,': 'open-user-configuration'
       'meta-o': 'open'
+      'meta-w': 'core:close'
 
     $(document).on 'new-window', => atom.newWindow()
     $(document).on 'open-user-configuration', => atom.open(atom.configFilePath)

src/app/window.coffee

@@ -24,6 +24,7 @@ windowAdditions =
     TextMateBundle.loadAll()
     TextMateTheme.loadAll()
     @setUpKeymap()
+    $(window).on 'core:close', => @close()
 
   # This method is intended only to be run when starting a normal application
   # Note: RootView assigns itself on window on initialization so that
@@ -34,7 +35,6 @@ windowAdditions =
     else
       new RootView(pathToOpen)
 
-    $(window).on 'close', => @close()
     $(@rootViewParentSelector).append(@rootView)
     $(window).focus()
     $(window).on 'beforeunload', =>