Added EC2 CopyImage
Merge pull request #233 from nmcclain/master

Added EC2 CopyImage
Better SG coverage

Security Groups now capture egress permission (only available in VPC), VPC ID, and Tags.
New SG unit tests
Merge pull request #235 from drombosky/td-more-sg-info

Td more sg info
Merge remote-tracking branch 'crowdmob/master'