add fuzzy string match support for Programs plugin

Wox.Test/FuzzyMatcherTest.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NUnit.Framework;
+using Wox.Infrastructure;
+
+namespace Wox.Test
+{
+    [TestFixture]
+    public class FuzzyMatcherTest
+    {
+        [Test]
+        public void MatchTest()
+        {
+            var sources = new List<string>()
+            {
+                "file open in browser-test",
+                "Install Package",
+                "add new bsd",
+                "Inste",
+                "aac",
+            };
+
+
+            var results = new List<Wox.Plugin.Result>();
+            foreach (var str in sources)
+            {
+                results.Add(new Plugin.Result()
+                {
+                    Title = str,
+                    Score = FuzzyMatcher.Create("inst").Score(str)
+                });
+            }
+
+            results = results.Where(x => x.Score > 0).OrderByDescending(x => x.Score).ToList();
+
+            Assert.IsTrue(results.Count == 3);
+            Assert.IsTrue(results[0].Title == "Inste");
+            Assert.IsTrue(results[1].Title == "Install Package");
+            Assert.IsTrue(results[2].Title == "file open in browser-test");
+        }
+    }
+}