Updated version for next release cycle
Fix markdown error in README
Move comments on metadata in README

Move the section on metadata to the correct location.
Fix typo in README and ReleaseNotes
Speed up plugin loading

Avoid the `require` on `leiningen.repl`.  This saves about 1.5s on `lein
version` when the plugin is active.
Updated project.clj, release notes and readme for 0.3.1
Merge release/0.3.1