Added services OpsWorks and Redshift.
Updated EBS optimized EC2 instance type data.
Added regions for CloudSearch, DynamoDB, Elastic Beanstalk, ElastiCache.
Fixed Simple Workflow JSON element name.

Beware that this might break client code using that JSON element name.
Merge pull request #20 from sopel/services_opsworks_redshift

Added services OpsWorks and Redshift.
Merge pull request #21 from sopel/update_ec2_ebs_optimized_iops_20130319

Updated EBS optimized EC2 instance type data.
Merge pull request #22 from sopel/add_regions_cloudsearch_dynamodb_elasticbeanstalk_elasticache_20130312

Added regions for CloudSearch, DynamoDB, Elastic Beanstalk, ElastiCache.
Merge pull request #23 from sopel/fix_simpleworkflow_name

Fixed Simple Workflow JSON element name.