[Stackless] Sharing my useless module

[Alejandro Castillo]

Hi,

Just commited on the StackessExamples wiki my first example.  English
is not my primary language, so feel free to fix any mistakes, or tell
me if I should change something.  The example only includes the sleep
with threads.  I still don't know how to present the other parts of
the library, but surely I will keep adding more things to the wiki.

The download link will redirect to the "useless" project on bitbucket.
https://bitbucket.org/pyalec/useless/src/tip/useless/_sleeping.py

Saludos,
Alejandro