fix readme pypi display

Author: nikolas

setup.py

@@ -1,17 +1,23 @@
+import io
 from setuptools import setup
+from os import path
+
+this_directory = path.abspath(path.dirname(__file__))
+with io.open(path.join(this_directory, 'README.rst'), encoding='utf-8') as f:
+    long_description = f.read()
 
 setup(
     name='django-markwhat',
     version=".".join(map(str, __import__('django_markwhat').__version__)),
     packages=['django_markwhat', 'django_markwhat.templatetags'],
     url='http://pypi.python.org/pypi/django-markwhat',
-    license=open('LICENSE').read(),
+    license="BSD-3-Clause",
     author='Alireza Savand',
     author_email='[email protected]',
     install_requires=['Django', ],
     description="A collection of template filters that implement " +
             "common markup languages.",
-    long_description=open('README.rst').read(),
+    long_description=long_description,
     keywords=[
         'django',
         'markdown',