chore(package): add dependencies in nuspec
chore(package): add dependencies in nuspec

Could not add dependency on Microsoft.Extensions.Testing.Abstractions,
still a pre-release. See https://github.com/NuGet/Home/issues/1365

nspec/NSpec,mattflo/NSpec,mattflo/NSpec,mattflo/NSpec,mattflo/NSpec,nspec/NSpec,BennieCopeland/NSpec,BennieCopeland/NSpec