Merge branch 'release/git-0.7.0-beta.1'
Use relative link for Release Notes

This gets the README to link to the Release Notes in the same git branch.
first try at 0.8 port
Insert placeholder for a clone-or-pull test
Split out clone, pull and checkout

Also adds a server-spec.
Use leiningen rather than maven
Add release script
Updated project.clj, release notes and readme for 0.8.0-alpha.1
Merge branch 'release/0.8.0-alpha.1'
Merge tag 'git-0.8.0-alpha.1' into develop

git-crate-0.8.0-alpha.1
Updated version for next release cycle
Update to support crate metadata

Adds in crate metadata and README.md generation.
move installing git to install phase
add plugin for generating docs with copy-doc
correct url for generated docs to point at git-crate
Add documentation for :install phase
Rename install-git plan-fn to install
Rename git server-spec to server-spec
Add a git plan for calling arbitrary git tasks