spulec/moto — pull request #270 by tsanders (2014-11-27 17:21:43+00:00)
Title: Add support for instance "groupSet" attribute modification and description.  Support for Route Table tagging.

The `modify_instance_attribute` method for instances supported ".Value"-based attributes, but not the support needed to modify an instance's security group list. I added support for route table tagging too (small change).