Aw, c'mon, cable adjustments are WAY easier than limit screws! Just turn the barrel adjuster until it shifts right. If the cable is so loose that you've adjusted the barrel to the limit, then screw the barrel back down to the inner limit, get a pair of pliers and a wrench, loosen the cable clamp, pull the cable until it's just taut when the derailleur is in the small ring, then retighten the clamp, and take up any small amount of remaining slack with the barrel adjuster. Easy-peasy.