Microsoft announced the release of Visual Studio 2015 Update 3 two days ago. They have addressed issues from previous update and improved few things. In the list of improvements, I found an interesting thing that you can now quickly include NuGet packages by just using the resolve reference method. You can say it An option to add a reference to a NuGet package as a quick fix.
You can enable this option from Tools > Options > Text Editor > C# > Advanced, under "Using Directives":
Visual Studio is improving in most of the expects for the development of the Universal Application development. There kind of improvements can make you more productive..