Merge branch 'dev/develop' of https://github.com/dotnetcore/osharp into dev/develop

Author: gmf520

samples/web/Liuliu.Demo.WebApi/Liuliu.Demo.WebApi.csproj

@@ -71,10 +71,6 @@
     <ProjectReference Include="..\..\..\src\OSharp.Swagger\OSharp.Swagger.csproj" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="Migrations\" />
-  </ItemGroup>
-
   <ProjectExtensions>
     <VisualStudio>
       <UserProperties />