Updated the test_docopt

Updated test_default_value_for_positional_arguments

Signed-off-by: tanji <nicholastanjerome@gmail.com>
Merge pull request #159 from nicolaisi/develop

Updated the test_docopt
Use pytest when running "python setup.py test"
Merge pull request #191 from dankeder/dev-tests

Make `python setup.py test` run the test-suite
Mark this as a universal wheel

This means that a wheel built on any platform can be used any other platform. (This is true, since docopt is pure python)
Merge pull request #193 from alex/patch-1

Mark this as a universal wheel
Added comment “headers” for friendlier source reading

Also performed some minor reorganization of a few blocks of code, in order to group similar pieces of code together.