[results] add PGD_L2

update README.md

[scripts] add PGD L2

[adv samples] check saved results

[known attack] modify typo

[results] add PGD_L2

[result] add AutoAttack and Square

[adv attack] add AutoAttack and Square

remove file

[summary] add AutoAttack and Square

[summary] add AutoAttack and Square

[scripts] add AutoAttack and Square

[result] add AutoAttack and Square

[adv attack] add AutoAttack and Square

update readme