added provider support to the user tag
Consolidate ActionTag and ActionResultTag...

To leverage common implementation details
Merge pull request #21 from johnweldon/action-tag-refactor

Consolidate ActionTag and ActionResultTag...
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