implement lazy App.Ready event

ElectronNET.API/App.cs

@@ -356,7 +356,24 @@ namespace ElectronNET.API
         /// <summary>
         /// Emitted when the application has finished basic startup.
         /// </summary>
-        public event Action Ready;
+        public event Action Ready 
+        {
+            add
+            {
+                if(IsReady)
+                {
+                    value();
+                }
+
+                _ready += value;
+            }
+            remove
+            {
+                _ready -= value;
+            }
+        }
+
+        private event Action _ready;
 
         /// <summary>
         /// Application host fully started.
@@ -370,7 +387,7 @@ namespace ElectronNET.API
 
                 if(value)
                 {
-                    Ready?.Invoke();
+                    _ready?.Invoke();
                 }
             }
         }

ElectronNET.WebApp/Controllers/MenusController.cs

@@ -11,14 +11,7 @@ namespace ElectronNET.WebApp.Controllers
         {
             if (HybridSupport.IsElectronActive)
             {
-                if(Electron.App.IsReady)
-                {
-                    CreateContextMenu();
-                } 
-                else
-                {
-                    Electron.App.Ready += () => CreateContextMenu();
-                }
+                Electron.App.Ready += () => CreateContextMenu();
 
                 var menu = new MenuItem[] {
                 new MenuItem { Label = "Edit", Submenu = new MenuItem[] {