Instructions for creating an initializer

Adds instructions for adding an intitalizer to bootstrap an oAuth service on application boot. Useful to not have to recreate Authentication Methods when deploying new environments or between truncating / db dump/loads between production and staging.
Merge pull request #138 from j-mcnally/master

Instructions for creating an initializer
Spree master is now 2.4.0.beta
ensure user even if auth... unlikely but best to gaurd against it
fix order to make more sense
Document on how to add new OAuth providers
Merge pull request #141 from hnatt/doc-adding-other-sources

Document on how to add new OAuth providers
Add module.
Merge branch 'paranoid-sanity-check' of https://github.com/j-mcnally/spree_social
Added support for login with amazon and added workaround for devise routing limitation (see issue #113)
fixes #142
Fix spec and some deprecations.
Fix missing ability to support 3d party devise-modules.
Merge pull request #1 from SumatoSoft/vs-devise-modules-support-missing

Fix missing ability to support 3d party devise-modules.
Use Spree 2-3-stable