improved setup for pypi submission

setup.py

@@ -3,13 +3,25 @@
 from setuptools import setup, find_packages
 
 
-setup(name='pubs',
-      version='4',
-      author='Fabien Benureau, Olivier Mangin, Jonathan Grizou',
-      author_email='fabien.benureau+inria@gmail.com',
-      url='',
-      description='research papers manager',
-      requires=['pyyaml', 'bibtexparser', 'dateutil'],
-      packages=find_packages(),
-      scripts=['pubs/pubs'],
-      )
+setup(
+    name         = 'pubs',
+    version      = '0.5.0',
+    author       = 'Fabien Benureau, Olivier Mangin, Jonathan Grizou',
+    author_email = 'fabien.benureau+inria@gmail.com',
+    maintainer   = 'Olivier Mangin',
+    url          = '',
+
+    description  = 'command-line scientific bibliography manager',
+    requires     = ['pyyaml', 'bibtexparser', 'dateutil'],
+    packages     = find_packages(),
+    scripts      = ['pubs/pubs'],
+
+    classifiers=[
+        'Development Status :: 4 - Beta',
+        'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Intended Audience :: Developers',
+        'Intended Audience :: Science/Research',
+    ]
+)