bug fix: encoding missing from open()

[DevinCharles]

Encoding option that is passed to read_table was never passed to open() command.

Should fix ISSUE #8: UnicodeDecodeError: 'gbk' codec can't decode byte 0xbf in position 2: illegal multibyte sequence

[elyase]

Hey, thanks for the fix! The tests are failing because the encoding option is not supported in Python 2. Would it be too much to ask that you use something from:

https://stackoverflow.com/questions/10971033/backporting-python-3-openencoding-utf-8-to-python-2

so that the library can stay Python compatible?

[DevinCharles]

There appears to be a difference in the way Python 3 and 2 handle .decode('utf-8')... so my most recent commit fails test_cities....

Python 3

['\ufeffSao Paulo é a capital do estado de Sao Paulo. As cidades de Barueri\r\n',
 'e Carapicuíba fazem parte da Grade Sao Paulo. O Rio de Janeiro\r\n',
 'continua lindo. No carnaval eu vou para Salvador. No reveillon eu \r\n',
 'quero ir para Santos.']

Python 2

[u'\ufeffS\xe3o Paulo \xe9 a capital do estado de S\xe3o Paulo. As cidades de Barueri\r\n',
 u'e Carapicu\xedba fazem parte da Grade S\xe3o Paulo. O Rio de Janeiro\r\n',
 u'continua lindo. No carnaval eu vou para Salvador. No reveillon eu \r\n',
 u'quero ir para Santos.']

I'll have to think about this... or wait for someone who actually knows what they're doing to fix it :)