improve the usage explanation in cli/tpjs
improve the usage explanation in cli/tpjs

neraliu/tpjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tpjs,neraliu/tpjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tpjs,neraliu/tpjs,neraliu/tainted-phantomjs,neraliu/tpjs,neraliu/tainted-phantomjs,neraliu/tainted-phantomjs,neraliu/tpjs,neraliu/tpjs,neraliu/tpjs,neraliu/tpjs