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/Storage/Storage.cs

@@ -0,0 +1,46 @@
+using System;
+using System.IO;
+
+namespace Wox.Infrastructure.Storage
+{
+    public class Storage<T>
+    {
+        protected T Data;
+        protected Type DataType { get; }
+        public string FileName { get; }
+        public string FilePath { get; set; }
+        public string FileSuffix { get; set; }
+        public string DirectoryPath { get; set; }
+        public string DirectoryName { get; set; }
+
+        public virtual T Load()
+        {
+            throw new NotImplementedException();
+        }
+
+        public virtual void Save()
+        {
+            throw new NotImplementedException();
+        }
+
+        public virtual void LoadDefault()
+        {
+            throw new NotImplementedException();
+        }
+
+        protected Storage()
+        {
+            DataType = typeof (T);
+            FileName = DataType.Name;
+            DirectoryPath = Wox.DataPath;
+        }
+
+        protected void ValidateDirectory()
+        {
+            if (!Directory.Exists(DirectoryPath))
+            {
+                Directory.CreateDirectory(DirectoryPath);
+            }
+        }
+    }
+}