Add Type/Task for updating a CloudFormation template
More descriptive message and specify capabilities

Unfortunately the capabilities parameter doesn't seem to work as
documented
Switch to working capabilities

See https://forums.aws.amazon.com/thread.jspa?threadID=137387
Working CloudFormation deployment

Currently doesn't deal with different environments properly
Make CloudFormation deploy more Stage friendly

Now default to adding -STAGE to stack name and add a stage
parameter to the map we pass to the template
Merge pull request #138 from guardian/pw-cloud-formation

CloudFormation deployment