Release: AWS CloudFormation on 2014-11-06

https://aws.amazon.com/releasenotes/AWS-CloudFormation/3561374866335537

A note not related with this PR. Please have a look at my ticket #126. The new (previous release) AutoScalingScheduledAction property of UpdatePolicy and the introduction of the CreationPolicy attribute (in this release) call for a different approach to manage these "policies". I suggest to put them in a separate module.