Summary:
`react-native link` was an early experiment, [rnpm](https://github.com/rnpm/rnpm) does this much better. After merging this PR we should merge rnpm so that `react-native link` works again :)
grabbou Kureev Just making some space here :)
This reverts 4e5a2bc079.
**Test Plan**
e2e tests on Travis and CircleCI
Closes https://github.com/facebook/react-native/pull/7290
Differential Revision: D3240702
Pulled By: mkonicek
fb-gh-sync-id: 6aac83fac599ba3db0dd0a7ac48653ebabd93491
fbshipit-source-id: 6aac83fac599ba3db0dd0a7ac48653ebabd93491
12caa363a1