Sigv4 support for S3 by lindsley
Fixes to get BJS working - hacks!
S3 domains are a wee bit non-standard between regions.

Just a bit.
Update DesiredCapacity if AutoScalingGroup.desired_capacity is not None as fix for boto/boto#1757
Use appropriate unittest assertions for instance types in autoscaling tests
Update Elastic Beanstalk module to support worker environments.  Fixes #1910.
Updated Elasticache to utilize SigV4.
Added conditional use of SigV4 to EC2.
Update RDS documentation for API version: 2013-09-09
Merge pull request #1914 from mohangk/develop

Update RDS documentation for API version: 2013-09-09
sriovNetSupport instance attribute
Merge pull request #1915 from rayrayson/develop

Documentation: sriovNetSupport instance attribute
Initial version of BigMessage.
Fix doc string.
Add AddTags support for EMR connections.

Closes issue #1909 in upstream.

See http://docs.aws.amazon.com/ElasticMapReduce/latest/API/API_AddTags.html
Typo fix.
add Kinesis to generated docs
fix length of ==== heading markers in Kinesis ref doc
Fix some doc strings and add comments.
Merge pull request #1921 from cce/kinesis_docs

Documentation: add Kinesis API reference