JSON Test Data 0.7 breaks tests

[danascheider]

JSON Test Data 0.7 is breaking the tests because it generates objects with random values that don't play well with fixtures. Have to figure out a new way to test Rambo that doesn't rely on specific values.

One option, of course, would be to require JSON Test Data <= 0.6.0, but future versions will be much more flexible in he kinds of test data they generate and the amount of JSON schema they can work with.

[danascheider]

This is addressed for RSpec tests in #27. Cukes are still a work in progress.

[danascheider]

#27 resolved this for RSpec tests by stubbing out JsonTestData.generate! and returning a predetermined value. However, in the Cucumber suite this is not possible because Aruba spawns a child process in which to run the app, making JsonTestData as well as the rest of the app code unavailable to RSpec Mocks.