Corrected from typos in Hart notebook and better colors and plots
Corrected from typos in Hart notebook and better colors and plots

pauldeng/nilmtk,mmottahedi/nilmtk,jaduimstra/nilmtk,HarllanAndrye/nilmtk,AlexRobson/nilmtk,josemao/nilmtk,nilmtk/nilmtk,nilmtk/nilmtk