Update the README

Signed-off-by: Timur Tabi <timur.tabi@calxeda.com>
Initial check-in

This script scrapes the pledge page for any given Kickstarter project,
waiting until the status of a given pledge changes.  It then launches
the page in a web browser when that happens.

Set your Kickstarter userid and password with the KSUSER and KSPASS
environment variables.  Usage:

kswatch.py <url> --award=<number>

Signed-off-by: Timur Tabi <timur.tabi@calxeda.com>