[Setup] use utf-8 explicitly in setup.py, fixes #8

Author: stefankoegl

setup.py

@@ -2,11 +2,12 @@
 
 from distutils.core import setup
 import re
+import io
 import os.path
 
 dirname = os.path.dirname(os.path.abspath(__file__))
 filename = os.path.join(dirname, 'jsonpointer.py')
-src = open(filename).read()
+src = io.open(filename, encoding='utf-8').read()
 metadata = dict(re.findall("__([a-z]+)__ = '([^']+)'", src))
 docstrings = re.findall('"""(.*)"""', src)