Add 0.7.0-alpha.2 into README
Use pallet-jclouds 1.7.0-alpha.2

Use the clj-jclouds functions to access jclouds.
Update metadata for 0.8.0-alpha.3
Updated metadata for 0.8.0-alpha.3
Updated project.clj, release notes and readme for 0.8.0-alpha.3
Merge branch 'release/0.8.0-alpha.3' into develop
Updated version for next release cycle