Update dynamodb docs
Update opsworks docs
Update autoscaling docs
Update elasticbeanstalk docs
Update sqs docs
Update elb documentation
Update datepipeline docs
Update elastictranscoder service

* Doc updates
* MaxFrameRate
* Watermarks
Update sts model

* docs
* DecodeAuthorizationMessage added
Update cloudsearch docs
Remove xmlnamespace attr in emr model
Add in xmlnamespace in extra file
Update sns model

* Doc updates
* Switch to signature version 4
Update importexport docs and api_version
Rebuild models
Update redshift model with latest changes
Merge branch 'service-updates' into develop

* service-updates:
  Update redshift model with latest changes
  Rebuild models
  Update importexport docs and api_version
  Update sns model
  Add in xmlnamespace in extra file
  Remove xmlnamespace attr in emr model
  Update cloudsearch docs
  Update sts model
  Update elastictranscoder service
  Update datepipeline docs
  Update elb documentation
  Update sqs docs
  Update elasticbeanstalk docs
  Update autoscaling docs
  Update opsworks docs
  Update dynamodb docs