Having spoken with @Aaronontheweb, it appears that the NuGet 3.4 binary has been erroneously commited in to the .NuGet folder of the repository.

I am proposing we remove this file along with the NuGet.targets and pull them from the users cache, ensuring that they are appropriately added to the .gitignore file.

The rationale behind this change would be that most developers have NuGet on there system already, and if they don't we can just refresh the file from the web. I'm happy to create a PR for this in the next few days.