Add support for unicode in README.md

[jonahweissman]

In setup.py, the contents of README.md are read as a string,
but this fails because it contains a unicode character. By using
the codecs library, the unicode character can be included in the
string.

I wasn't sure if I needed to do anything special to import other packages in setup.py.
Let me know if there's something I need to change.

[stared]

@jonahweissman Which version of Python do you use?

In Python 3.6 on OSX and Ubuntu I don't notice such problem. While I do support Python 2.7 for library usage, I don't plan to add it to library deployment process.

[jonahweissman]

I'm running Python 3.6.4 on Ubuntu 14.04. This what I get when I run pip install livelossplot:

Collecting livelossplot
  Using cached livelossplot-0.1.4.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-mcgni592/livelossplot/setup.py", line 11, in <module>
        long_description=readme(),
      File "/tmp/pip-build-mcgni592/livelossplot/setup.py", line 5, in readme
        return f.read()
      File "/home/jonah/.conda/envs/odc/lib/python3.6/encodings/ascii.py", line 26, in decode
        return codecs.ascii_decode(input, self.errors)[0]
    UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 318: ordinal not in range(128)
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-mcgni592/livelossplot/

[stared]

Strange (as I run it on Ubuntu as well). I guess some environment setting overrides the unicode default (some LANG flag?).

Does any change not involving loading other libraries work (e.g. setting encoding='utf-8' in built-in read) work?

[jonahweissman]

Yes! I just tested it with open('README.md', encoding='utf-8') and it worked perfectly.

[jonahweissman]

It's not really important at this point, but according to the Python docs, the default encoding is None.
(https://docs.python.org/3.5/library/functions.html#open)

[stared]

Merged, thanks @jonahweissman ! 👍

[jonahweissman]

Great! I really appreciate this package, @stared, thank you for creating it!