added provider support to the user tag
Merge branch 'add-provider-to-user' of https://github.com/mattyw/names into mattyw-add-provider-to-user
Refator user tag to give an upgrade path.
tweak provider text in test
Actually test the username
Export IsValidRelation function.
Merge pull request #23 from tasdomas/expose-relation-validator

Export IsValidRelation function.
Merge pull request #22 from howbazaar/add-provider-to-user

Add provider to user