align '--' in Python docstring arg list

Tweak to function recently added python-args-to-docstring.

Now it will look like this:

def my_func(foo, barbar=0, bazbazbaz = False)
    """

    Keyword Arguments:
    foo       --
    barbar    -- (default 0)
    bazbazbaz -- (default False)

    """
add contributors file
Merge pull request #8 from jferguson-gnubio/python_docstring_arg_tweak

align '--' in Python docstring arg list
assert In for Python unittest
Improve the main snippet in cc-mode
Remove the main snippet from c++-mode

This snippet is already inherited from cc-mode.
inc and inc.1 should set a key
cc-mode/guard did the same as once, just worse
Merge pull request #10 from bo0ts/better-inc

inc and inc.1 should set a key
Merge pull request #9 from bo0ts/master

Duplicate main snippet in c++-mode
add some grouping
remove space from 'sh-mode/args '

The space really confuses git on Windows
Merge pull request #12 from npostavs/nospace

remove space from 'sh-mode/args '
Add vendor prefix snippet to css-mode
Merge pull request #11 from prtksxna/master

Add vendor prefix snippet to css-mode
fix problem with markdown mode #13
Replace some legacy usage of 'text' with 'yas-text'
Merge pull request #14 from capitaomorte/master

Replace some legacy usage of 'text' with 'yas-text'
celery debug pdb
Updated the Fortran snippets

Tweaked three of the existing snippets and added a bunch of new ones.

Signed-off-by: Jonas Kalderstam <jonas@kalderstam.se>