Updated FAQ vignette with by=.EACHI and GitHub links.
Updated FAQ vignette with by=.EACHI and GitHub links.

vlulla/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table,vlulla/data.table,vlulla/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table,Rdatatable/data.table,Rdatatable/data.table