Fixed #35

-----

    > Notification.requestPermission()
    < "granted" = $1
    > Notification.requestPermission(function (e){console.log(e)})
    [Log] granted

Author: 0xWDG

WebShell/ViewController.swift

@@ -240,8 +240,8 @@ class ViewController: NSViewController, WebFrameLoadDelegate, WebUIDelegate {
         }
 
         // @wdg Add Notification Support
-        // Issue: #2
-        jsContext.evaluateScript("function Notification(myTitle, options){if(typeof options === 'object'){var body,icon,tag;if (typeof options['body'] !== 'undefined'){body=options['body']}if (typeof options['icon'] !== 'undefined'){Notification.note(myTitle, body, options['icon'])}else{Notification.note(myTitle, body)}}else{if(typeof options === 'string'){Notification.note(myTitle, options)}else{Notification.note(myTitle)}}}Notification.length=1;Notification.permission='granted';Notification.requestPermission=function(callback){if(typeof callback === 'function'){callback();return true}else{return true}};window.Notification=Notification;")
+        // Issue: #2, #35
+        jsContext.evaluateScript("function Notification(myTitle, options){if(typeof options === 'object'){var body,icon,tag;if (typeof options['body'] !== 'undefined'){body=options['body']}if (typeof options['icon'] !== 'undefined'){Notification.note(myTitle, body, options['icon'])}else{Notification.note(myTitle, body)}}else{if(typeof options === 'string'){Notification.note(myTitle, options)}else{Notification.note(myTitle)}}}Notification.length=1;Notification.permission='granted';Notification.requestPermission=function(callback){if(typeof callback === 'function'){callback('granted');}else{return 'granted'}};window.Notification=Notification;")
         let myNofification: @convention(block) (NSString!, NSString?, NSString?) -> Void = { (title:NSString!, message:NSString?, icon:NSString?) in
             self.makeNotification(title, message: message!, icon: icon!)
         }