Merge tag '0.6.0-beta.2' into develop

pallet-lein-0.6.0-beta.2
Updated version for next release cycle
On release, install before testing

The release jar depends on itself at runtime.
Add :no-project-needed to task

The task can run outside of a project.
Update to pallet-vmfest-alpha.2

Fixes an issue with supplied vbox.home property
Fix set-version regex for source file
Updated project.clj, release notes and readme for 0.6.0-beta.3
Merge branch 'release/0.6.0-beta.3'