Remove instance logic for BinaryStorage and JsonStorage, part 2

1. part of #389
2. file rename
3. fixup

Plugins/Wox.Plugin.CMD/CMDHistory.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+
+namespace Wox.Plugin.CMD
+{
+    public class CMDHistory
+    {
+        public bool ReplaceWinR { get; set; } = true;
+        public bool LeaveCmdOpen { get; set; }
+        public Dictionary<string, int> Count = new Dictionary<string, int>();
+
+        public void AddCmdHistory(string cmdName)
+        {
+            if (Count.ContainsKey(cmdName))
+            {
+                Count[cmdName] += 1;
+            }
+            else
+            {
+                Count.Add(cmdName, 1);
+            }
+        }
+    }
+}