Added legend to action mutation plot

...xperiments/12_1_50_decaying_decaying_300/12_1_50_0.03.png

...0_decaying_decaying_300/12_1_50_decaying_decaying_300.png

...trategies/Experiments/12_1_50_decaying_decaying_300/300.p

EvolutionStrategies/main.py

MutateActions/main.py