(maint) Add instructions for strong naming NuGet
(maint) Add instructions for strong naming NuGet

When running the strong name cmd to convert NuGet.Core, it would be
helpful to know to copy the items from the subfolder up and delete the
directory afterwards.

TheBigBear/choco,TheBigBear/choco,jberezanski/choco,jberezanski/choco,TheBigBear/choco,jberezanski/choco