Merge pull request #112 from GuillaumeDesforges/master

Remove dependencies incompatible with Python 3

requirements.txt

 wheel>=0.23.0
 Cython>=0.20.2
-argparse>=1.2.1
-futures>=2.1.6
 six>=1.7.3
 gensim>=1.0.0
 scipy>=0.15.0

setup.py

@@ -17,8 +17,6 @@ history = open('HISTORY.rst').read().replace('.. :changelog:', '')
 requirements = [
     'wheel>=0.23.0',
     'Cython>=0.20.2',
-    'argparse>=1.2.1',
-    'futures>=2.1.6',
     'six>=1.7.3',
     'gensim>=1.0.0',
     'scipy>=0.15.0',