Updated the changelist doc for the upcoming release.

version bump

added example wsgi

version bump

bumped version

Update worldpay host URLs.

WorldPay recently communicated that their host URLs are changing.

"If you were previously using RBS WorldPay links such as https://secure.wp3.rbsworldpay.com/wcc/purchase  you will need to ensure that these are replaced with https://secure.worldpay.com/wcc/purchase to ensure that your site continues to be able to send payments through WorldPay's systems."

The documentation currently lists the new URLs

http://www.worldpay.com/support/kb/bg/htmlredirect/rhtml.html

This change updates the URLs as required.

Bumped the version and getting ready for a new version

Added Chargebee gateway support.

Fix the timestamp that was getting the transaction rejected.

Bumped the version number to 0.05