use %APPDATA%

1. Fix can't find Result.ctor bug for plugin introduced in
c0889de1f9ae460b2cc189eb59e5bd90ddb7d17e
2. use %APPDATA% for all data, part of #389
3. MISC

Wox.Infrastructure/Wox.cs

@@ -0,0 +1,13 @@
+using System;
+using System.IO;
+using System.Reflection;
+
+namespace Wox.Infrastructure
+{
+    public static class Wox
+    {
+        public const string Name = "Wox";
+        public static readonly string ProgramPath = Directory.GetParent(Assembly.GetExecutingAssembly().Location).ToString();
+        public static readonly string DataPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), Name);
+    }
+}