Implement `check_output` to support Python versions prior to 2.7.  This is basically a copy-and-paste of the function with the same name from the standard library’s `subprocess` module.
Implement `check_output` to support Python versions prior to 2.7.  This is
basically a copy-and-paste of the function with the same name from the
standard library’s `subprocess` module.

yggi49/obdaRemind