Make "screen" module a browser module

atom/browser/api/lib/screen.coffee

@@ -0,0 +1,11 @@
+binding = process.atomBinding 'screen'
+
+checkAppIsReady = ->
+  unless process.type is 'renderer' or require('app').isReady()
+    throw new Error('Can not use screen module before the "ready" event of app module gets emitted')
+
+for name, _ of binding
+  do (name) ->
+    module.exports[name] = (args...) ->
+      checkAppIsReady()
+      binding[name](args...)