Type of initial modules

Writing module seems hard, so we trying to design a set of templates according to different screnario:

Name	Command
Basic	screwjack init basic
Hive(CDH4)	screwjack init hive
PIG(CDH4)	screwjack init pig
EMR(Hive)	screwjack init emr_hive
EMR(Pig)	screwjack init emr_pig