Added fixture to load common Facebook settings
Added fixture to load common Google settings
Added fixture to load common Twitter settings
Added fixture to load common Microsoft Live settings
Changed Provider model to accept Microsoft Live urls
Migration to expand the length of the URL field.
Add release note about URL field changes.
Allow serialization and deserialization of providers and associations by natural keys.
Convert fixture to JSON since not everyone uses YAML. Include Github and Bitbucket as common providers. Remove PK references.
Documentation on loading the initial set of providers. Fixes #32
Merge pull request #45 from mlavin/42-fixtures

Fixtures