Add schema for permissions
Clarify jclouds provider in aws-ec2 doc string
Update jclouds profile
Add implementation for pallet-ec2

Closes #1
Exclude resources from checkout shares
Fix project url
Add travis configuration
Remove release script
Add :default-phases to server-spec
Updated project.clj, release notes and readme for 0.8.0-alpha.4
Updated version for next release cycle