run 2to3
decode output from subprocess commands
update % interpolation to .format(...)
ignore vim droppings
fix parenthesis
make it work on python2
add to credits
revert to /usr/bin/python

see http://legacy.python.org/dev/peps/pep-0394/ for rationale
Merge branch 'scholarly-python3'
Break some long lines into shorter ones.
Added requirements section in README.
Removed extra spaces at the end of each line.