Log Message:
(finance/py-eth-hash) build fix for py36 (only)

py36 gives following flag:
Traceback (most recent call last):
  File "setup.py", line 50, in <module>
    long_description = readme.read()
  File "/usr/pkg/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 0xe2 in position 2861: \ 
ordinal not in range(128)