fix encoding error for windows

[Noordsestern]

On windows installation python may assume a limited encoding such as cp1252. That leads to encoding errors when installing on windows command line, because the README.rst is parsed which as a modern encoding.

This pull requests sets the encoding of the README.rst to UTF-8.

Be aware, that I set a new version 0.8.1, Check, if you want to accept that.

[Noordsestern]

This is supposed to fix #5

[Noordsestern]

Tested on my local machine with

pip install .

[amotl]

Dear @Noordsestern,

thanks for writing in and thanks for your contribution.

As that would croak on Python 2.x with

Traceback (most recent call last):
  File "setup.py", line 6, in <module>
    README = open(os.path.join(here, 'README.rst'), encoding='UTF-8').read()
TypeError: 'encoding' is an invalid keyword argument for this function

we improved that slightly to satisfy the installation on Python 2.x again by 1315d16. Release 0.8.2 should be on PyPI already. Thanks again!

With kind regards,
Andreas.

---

P.S.:

Be aware, that I set a new version 0.8.1, Check, if you want to accept that.

Better send pull requests without such version bumps as it is usually done by the upstream machinery in any way, often automagically after running through some build pipeline these days.