Allow to easily update a project created from template to a new version

[theimowski]

Ideally using paket - I have a rough idea how this could look like, however not yet sure if possible

[theimowski]

#123 is related - thanks to having the parts of build script i NuGet package, it's easy just to paket update

[xlx21]

Hi @isaacabraham. I think this can be closed since we now have a recipe for migrating to v2 and I assume the approach isn't going to change.