1.4.8 - Add options for capturing output

Add options for capturing output

• This resolves #11

To enable capture, set a Python env variable called "NOSE_CAPTURE" to "1".

It can be done like this in an __init__.py file:

import os
os.environ["NOSE_CAPTURE"] = "1"

This restores the default setting of nose, which is capturing output.
(Note that if output is captured, print() calls won't be seen.)

Capturing output can also be enabled with: --capture-output.