added Seq2SeqEdge.get_gaps() method as discussed with Kenny Daily 8/8/08
added Seq2SeqEdge.get_gaps() method as discussed with Kenny Daily 8/8/08

GenDataPro/pygr,ctb/pygr,RitwikGupta/pygr,cjlee112/pygr,GenDataPro/pygr,theoryno3/pygr,theoryno3/pygr,cjlee112/pygr,cjlee112/pygr,ctb/pygr,ctb/pygr,cjlee112/pygr,ctb/pygr,GenDataPro/pygr,theoryno3/pygr,RitwikGupta/pygr,ctb/pygr,RitwikGupta/pygr