Fix setup.py encoding to be py2 and py3 compatible.

README.rst

@@ -29,4 +29,5 @@ Contributing
 
 Do you wish to contribute to IHateMoney? Fantastic! There's a lot of very
 useful help on the official `contributing
-<https://ihatemoney.readthedocs.io/en/latest/contributing.html>`_ page.
+<https://ihatemoney.readthedocs.io/en/latest/contributing.html>`_ page.
+

setup.py

@@ -1,16 +1,13 @@
 # -*- coding: utf-8 -*-
 import os
+import sys
+
+from io import open
 from setuptools import setup, find_packages
 
 here = os.path.abspath(os.path.dirname(__file__))
 
 
-def read_file(filename):
-    """Open a related file and return its content."""
-    with open(os.path.join(here, filename), "r") as f:
-        return f.read()
-
-
 def parse_requirements(filename):
     """ load requirements from a pip requirements file """
     with open(filename) as lines:
@@ -18,7 +15,12 @@ def parse_requirements(filename):
         return [line for line in lineiter if line and not line.startswith("#")]
 
 
-README = read_file('README.rst')
+README = open('README.rst', encoding='utf-8').read()
+CHANGELOG = open('CHANGELOG.rst', encoding='utf-8').read()
+
+description = u'\n'.join([README, CHANGELOG])
+if sys.version_info.major < 3:
+    description = description.encode('utf-8')
 
 ENTRY_POINTS = {
     'paste.app_factory': [
@@ -33,7 +35,7 @@ ENTRY_POINTS = {
 setup(name='ihatemoney',
       version='4.1',
       description='A simple shared budget manager web application.',
-      long_description=README,
+      long_description=description,
       license='Custom BSD Beerware',
       classifiers=[
           "Programming Language :: Python",