UnicodeDecodeError in installation

[tushuhei]

I encountered UnicodeDecodeError in installation. We may want to read README.rst specifying its encoding.

$ python3 setup.py
Traceback (most recent call last):
File "setup.py", line 32, in
long_description=read_file('README.rst'),
File "setup.py", line 23, in read_file
return f.read().strip()
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 0xe3 in position 6988: ordinal not in range(128)