Add support for VPCPeeringConnections.
Update support for VPCPeeringConnections. (New boto version in Travis matrix and gte threshold for tests.)
First, we make it crash #160
Fix #160, implemented blockDeviceMapping modify_attribute set
Merge pull request #156 from DreadPirateShawn/VPCPeeringConnections

Add support for VPCPeeringConnections.
Add @DreadPirateShawn to authors.
Merge pull request #162 from andresriancho/master

Fix block device mapping #160
0.3.4