fixes non ascii characters in README.rst

[theRemix]

I wasn't able to install due to unicode characters in readme

Error:

Collecting mocket==2.7.2 (from -r requirements.txt (line 44))
  Downloading https://files.pythonhosted.org/packages/a5/c9/478da224865ede99a69cee4bcd7593185d8a92e5aa6f044e86445cfe7ab8/mocket-2.7.2.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-a52nwr9c/mocket/setup.py", line 37, in <module>
        long_description=io.open('README.rst').read(),
      File "/usr/lib/python3.5/encodings/ascii.py", line 26, in decode
        return codecs.ascii_decode(input, self.errors)[0]
    UnicodeDecodeError: 'ascii' codec can't decode byte 0xc9 in position 25: ordinal not in range(128)

[coveralls]

Coverage remained the same at 98.371% when pulling dfe8941 on theRemix:feature/fix-readme-encoding into 0a5a300 on mindflayer:master.

[mindflayer]

Thank you for your contribution.

[mindflayer]

I am sorry for the delay, but I am on holiday and I had to wait to be able to publish a new release:
https://pypi.org/project/mocket/2.7.3/