ydiff/tests/README

# To generate expected output, chdir to a subdir and use following command, then
# review with `less -R`
#
../../ydiff.py -c always < in.diff > out.normal
../../ydiff.py -c always -s < in.diff > out.side-by-side
../../ydiff.py -c always -s < in.diff -w70 > out.w70
../../ydiff.py -c always -s < in.diff -w70 --wrap > out.w70.wrap