Summary:
* Allow generate-native-modules-specs-cli.js to generate Android specific files
* Add stub impl for Java spec generation (the output are still incomplete, see the next diffs for missing impl + tests)
* Adjust the CLI to only produce modules stuffs, there's no need to produce components code
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D22860936
fbshipit-source-id: 38aae390189f143f6c6216995437ac1ff15a1788
Summary:
Use transpiled `react-native-codegen` scripts. By avoiding use of flow-node, we no longer need to upgrade flow-remove-types in order to run the native modules codegen script.
The interface for the script remains the same:
```
./scripts/generate-native-modules-specs.sh [optionalOutputDir]
```
Changelog: [Internal]
Reviewed By: TheSavior
Differential Revision: D21629705
fbshipit-source-id: 7714a67e36c8151a3b0b49285b6a6c93a525d7bc
Kevin Gozali
Héctor Ramos