Added a script for extracting the regions covered (in the reference species) by all other species in an alignment.
Added a script for extracting the regions covered (in the reference species)
by all other species in an alignment.

uhjish/bx-python,uhjish/bx-python,bxlab/bx-python,uhjish/bx-python,bxlab/bx-python,bxlab/bx-python