add -b argument to abundance-dist.py
add -b argument to abundance-dist.py

F1000Research/khmer,souravsingh/khmer,jas14/khmer,souravsingh/khmer,Winterflower/khmer,ged-lab/khmer,jas14/khmer,Winterflower/khmer,F1000Research/khmer,F1000Research/khmer,jas14/khmer,ged-lab/khmer,ged-lab/khmer,souravsingh/khmer,Winterflower/khmer