Connect Ruby tests with CircleCI (#33747)
Connect Ruby tests with CircleCI (#33747)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/33747

This Diff connects the ruby tests setup with CircleCI, making sure that we are executing the same script in Sandcastle and CircleCI.

At the moment, the scripts runs somedummy tests to make sure that everything works.

## Changelog
[iOS][Changed] - Add ruby tests to circleci

Reviewed By: dmitryrykun

Differential Revision: D36091716

fbshipit-source-id: c432e5f8b5269754db2b7ec278b159dcedf3b3b9

javache/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,javache/react-native,javache/react-native,javache/react-native,javache/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native