Depth flag for rptree tool

[lpozo]

From Basecamp by Martin: I use rptree to make file structures, but sometimes I'd like to limit the depth (like I can with tree) -- Maybe Leodanis Pozo RamosLeodanis you feel like adding that flag? Could be in a branch too so the original project linked to the tutorial stays in scope : )

(low priority, just noting it here. and doesn't have to be Leodanis to do it of course)

[lpozo]

#8