Merge pull request #13 from shyba/master

Thanks!
adding coverage config, closes #14
Fix tests
Merge pull request #15 from shyba/master
Update README
pagseguro table is now aligned and the text above the table was mixed in a single line
I forgot the table header separators
Merge pull request #16 from shyba/master

I will merge this but can you fix the PEP8 errors described on travis, please @shyba ?
Fix PEP8 :snake:
Removed bitdeli since github has builtin analytics