.net 开源相关 http://roslyn.codeplex.com/SourceControl/latest https://github.com/dotnet http://www.dotnetfoundation.org http://www.dotnetfoundation.org/entity-framework-6 http://www.hanselman.com/blog/AnnouncingNET2015NETAsOpenSourceNETOnMacAndLinuxAndVisualStudioCommunity.aspx