Remove autohotkey and add toggle command args

Wox/CommandArgs/ToggleCommandArg.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Wox.CommandArgs
+{
+    public class ToggleCommandArg:ICommandArg
+    {
+        public string Command
+        {
+            get { return "toggle"; }
+        }
+
+        public void Execute(IList<string> args)
+        {
+            App.Window.ToggleWox();
+        }
+    }
+}