Add dry run mode

[artivis]

Would be great being able to dry-run some commands, especially link in order to make sure of what would happen before it actually does.

homeshick link --dry-run

[andsens]

Good idea! Added to the new features list :-)

[artivis]

In the mean time I added a hacky dry-run to the link command on my fork (see here). It still does create the necessary (sub)folders tho.