Update Torch install instructions for DIGITS 3
Update Torch install instructions for DIGITS 3

Deepomatic/DIGITS,ethantang95/DIGITS,Lucaszw/DIGITS,gheinrich/DIGITS-GAN,jmancewicz/DIGITS,brainstorm-ai/DIGITS,jmancewicz/DIGITS,brainstorm-ai/DIGITS,dongjoon-hyun/DIGITS,Lucaszw/DIGITS,Lucaszw/DIGITS,bygreencn/DIGITS,ethantang95/DIGITS-GAN,TimZaman/DIGITS,ethantang95/DIGITS,gheinrich/DIGITS-GAN,batra-mlp-lab/DIGITS,bygreencn/DIGITS,ethantang95/DIGITS-GAN,Deepomatic/DIGITS,Deepomatic/DIGITS,TimZaman/DIGITS,brainstorm-ai/DIGITS,ethantang95/DIGITS-GAN,dongjoon-hyun/DIGITS,batra-mlp-lab/DIGITS,ethantang95/DIGITS,gheinrich/DIGITS-GAN,dongjoon-hyun/DIGITS,Lucaszw/DIGITS,TimZaman/DIGITS,ethantang95/DIGITS-GAN,batra-mlp-lab/DIGITS,TimZaman/DIGITS,dongjoon-hyun/DIGITS,batra-mlp-lab/DIGITS,bygreencn/DIGITS,gheinrich/DIGITS-GAN,bygreencn/DIGITS,Deepomatic/DIGITS,ethantang95/DIGITS,jmancewicz/DIGITS,jmancewicz/DIGITS,brainstorm-ai/DIGITS