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.
Update Versionfile.
Minor engine tweaks.
Use new beta build for Travis
Point to correct repo and branch in doc.
Fixes broken feature specs.
Depends on Spree v2.4.0
Bump to 2.4.0