Change sub command name `generate` to `new`
Change sub command name `generate` to `new`

Because Rails uses `new` to create new project. I want to use `generate`
to generate other files such as concrete crawlers and processors.

yucao24hours/daimon-skycrawlers,bm-sms/daimon-skycrawlers,bm-sms/daimon_skycrawlers,yucao24hours/daimon-skycrawlers,bm-sms/daimon_skycrawlers,yucao24hours/daimon-skycrawlers,bm-sms/daimon-skycrawlers,bm-sms/daimon_skycrawlers