README.md - misspell

[nicewook]

I think below stdout.log should changed to stdout
Thanks for the package

Disabled dual logging

import pygogo as gogo

logger = gogo.Gogo(monolog=True).logger
logger.debug('debug message')
logger.info('info message')
logger.warning('warning message')
logger.error('error message')
logger.critical('critical message')

Prints the following to stdout.log (all messages at level INFO or below):

[reubano]

Nice catch! Mind submitting a PR?