mstest run dll

1. D:\PopplerAzure\MvcApp.Tests\bin\Debug>mstest /testcontainer:MvcApp.tests.dll
   Microsoft (R) Test Execution Command Line Tool Version 12.0.21005.1
   Copyright (c) Microsoft Corporation. All rights reserved.
2. https://msdn.microsoft.com/en-us/library/ms182489%28v=VS.100%29.aspx