Updated to working with python-negar module
Updated help_message
Added Authors, changelog, manifest, readme and other stuff

Also added version number
Added get_version()

get_version()
    =============

    Return version number in str
Show version number of python-negar and negar-cli
Added requirements.txt
Added setup.py
fixed get_version
Updated changelog.rst
Whoops, Mistake in RST list syntax
Merge pull request #3 from Alir3z4/master

Fixes for #2 packaging for pypi.
Now negar-cli is available at pypi:
http://pypi.python.org/pypi/negar-cli/