changed readme so that the code samples are easier to understand. Added color highlighting
changed readme so that the code samples are easier to understand. Added color highlighting

JackPu/ngProgress,JackPu/ngProgress,mojaray2k/ngProgress,qq645381995/ngProgress,costacruise/ngProgress,qq645381995/ngProgress,wwstay/ngProgress,VictorBjelkholm/ngProgress,fvezzoso/ngProgress,dlynam01/ngProgress,fvezzoso/ngProgress,louiselvira/ngProgress,bianchimro/ngProgress,wwstay/ngProgress,hshn/ngProgress,louiselvira/ngProgress,costacruise/ngProgress,VictorBjelkholm/ngProgress,dlynam01/ngProgress,bianchimro/ngProgress,hshn/ngProgress,mojaray2k/ngProgress