Readme: add example "winston.level = 'debug'"
Readme: add example "winston.level = 'debug'"

unlucio/winston,DenisGorbachev/winston,aquavitae/winston,dustinblackman/winston,jjmleiro/winston,beni55/winston,paulhroth/winston,z-10/winston,dbmikus/winston,get-trucked/winston,tobli/winston,nikolas/winston,modulexcite/winston,psquickitjayant/winston,rakesh-mohanta/winston,harriha/winston,winstonjs/winston,winstonjs/winston,wancharle/winston,thaliproject/winston,whismat/winston,megastef/winston,s-panferov/winston,alinex/winston,SmartNode-es/winston