在一个。net MVC 5项目中建立引导程序和Bootswatch

I have an ASP .NET MVC 5 project. The template came with bootstrap, and I have generally left it alone. I now want to use the Bootstrap source as well as Bootswatch variables files for styles. Previously, I have put all the resources needed to build the libraries in to a separate project and written a custom build script, but there must be an easier way. I have found a few related packages, but none provide anything comprehensive.I have an ASP .NET MVC 5 project. The template