ToPinyin: Convert to SimpChinese at first

Wox.Infrastructure/ChineseToPinYin.cs

@@ -77,6 +77,7 @@ namespace Wox.Infrastructure
         public static string ToPinYin(string txt)
         {
             txt = txt.Trim();
+            txt = Microsoft.VisualBasic.Strings.StrConv(txt, Microsoft.VisualBasic.VbStrConv.SimplifiedChinese, 0);
             byte[] arr = new byte[2];   //每个汉字为2字节 
             StringBuilder result = new StringBuilder();//使用StringBuilder优化字符串连接
             int charCode = 0;

Wox.Infrastructure/Wox.Infrastructure.csproj

@@ -32,6 +32,7 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Microsoft.VisualBasic" />
     <Reference Include="Newtonsoft.Json">
       <HintPath>..\packages\Newtonsoft.Json.5.0.8\lib\net35\Newtonsoft.Json.dll</HintPath>
     </Reference>