Don't pass empty lists to AuthorizeSecurityGroup*. fixes #7
Add python package build targets
Incompatibility with botocore 0.46+, fixes #9
Fixed minor typo in README sample code.
Implemented get, create, and destroy methods on acky.ec2.KeyPairCollection.
Edited documentation.
Implemented instance launcher for acky.ec2.InstanceCollection.
Implemented get, create, destroy, associate, and disassociate for Elastic Ips.