Release Procedure

This document will eventually detail the full release procedure for Spree.

1. All deprecations in the previous release (i.e. things marked with a deprecation warning) are now removable. Ensure that this has happened.
2. Anything that should be deprecated by the next release should be marked with a deprecation warning now. Nothing that people rely on should ever be removed in a patch or minor release without a deprecation warning.
3. ALL BUILDS ARE GREEN.
4. Update the Getting Started guide to specify correct version of Rails.
5. Update version number in generation message in cmd/lib/spree_cmd/extension.rb
6. Release new versions of spree_skrill and spree_usa_epay
7. Tag and deploy new versions of the guides