Fixed nuget build.
Fixed nuget build.

bryanedds/FSharpx.Extras,sideeffffect/FSharpx.Extras,bryanedds/FSharpx.Extras,bryanedds/FSharpx.Extras,sideeffffect/FSharpx.Extras,fsprojects/FSharpx.Extras,fsprojects/FSharpx.Extras