Summary:
This is initial (first step) in the merging process. For now, we are just going to move our code as is into `local-cli` folder (first commit). There were other tweaks made in separate commits to make it easier to go through the code as the diff is expected to be rather large. The purpose of this is to make it easier to start working in small batches and improving the CLI incrementally on a daily basis.

Current codebase will still leave in `rnpm` organisation on Github where we keep working on new features, bugs and ship releases to `npm` until we finish our integration and provide a nice interface for users to migrate (in case it changes at all)

Flow, Jest and npm will ignore this folder for now until we integrate it properly.

Tests are to be rewritten from mocha to jest in `rnpm/link`. We will hook them all up as soon as we start using them in local-cli.

For now, there's no point in having them running and possibly breaking the builds.

We will announce next steps with Kureev later this week
Closes https://github.com/facebook/react-native/pull/7550

Differential Revision: D3327772

Pulled By: mkonicek

fbshipit-source-id: 90faa4bd78476d93ed21b1253e0d95c755d28a30