Updating version code to 1.1.2.

This is a minor release which causes AuthSub requests to default to HTTPS by
default for security reasons.

All client libraries for the Google Data APIs are currently being revised
to use HTTPS by default.

This change does not affect ClientLogin applications.

Note:
Unfortunately, due to the design of the Ruby client library, we don't have a
good way to update client applications to use HTTPS automatically. Please
update any URLs in your application to use HTTPS. (Except for Blogger,
Finance, and YouTube -- which do not support HTTPS at this time).

Until this change is made, you may receive a scope error when making requests
using AuthSub.

Updated Rakefile to use hg instead of svn for prepdoc commands.

Getting ready to release 1.1.0

preparing for 1.0.1 gem launch to push calendar redirect support into…

… the gem.

Fix README

added rubyforge project to Gem spec