close #2
wrap the grouping logic into split method which allows users to browse the groups before the actual merging #2
update Rd file accordingly #2
update NAMESPACE
pass 'path' argument to rbind2 method to customize the cdf path. #2
add save_gs and load_gs
add copy.cdf = TRUE option to save_gs routine. close #5
fix #2
1.add flowWorkspace to depends list 2.update Rd file for save_gs