Summary:Version exposes the sdk level (which TBH is more useful anyways), not a version string.
Closes https://github.com/facebook/react-native/pull/6068
Differential Revision: D2971198
fb-gh-sync-id: 0ba1e10e48b2ca51c7b0cebcc1ec13d0b69df783
shipit-source-id: 0ba1e10e48b2ca51c7b0cebcc1ec13d0b69df783