We have a bunch of NuGet.Config files in our tests that were needed before because the tests were run out of a temp directory. Now the tests are run out of the artifacts folder, which is a subdirectory of our repo root, so the root NuGet.Config will get picked up.
I also updated all the dotnet-core feeds from www.myget.org to dotnet.myget.org.
With this change, any referenced analyzer project will be parsed by the
project system and the assemblies will be passed down to the compiler.
By default, the analyzer language is considered to be "cs". If another
language is used, the "languageID" option should be specified inside the
"analyzerOptions" section of the project.json file.
Resolves#83
