Attribute type can be :timestamp, not just :string
Merge branch 'better-type-expectation'
DRY: Automatically create fixtures from attributes
Rspec-api-doc DSL for POST (valid and invalid)
DRY: 'fixtures' accesses the resource fixtures
Rspec-api-doc DSL for PUT (valid and invalid)
Merge branch 'extract-fixtures'
Merge branch 'put-and-post-api-requests'
DRY: Reuse attributes as PUT/POST parameters

Note: *all* the attributes are being sent as parameter, which works
since the Rails controller has a whitelist, but will be improved later
by adding read_only attributes
DRY: Expect parameter values in PUT/POST response
DRY: Accept null parameters in PUT/POST requests
More readable fixture methods
Merge branch 'more-compact-specs'