Summary:Main goal is to get this passed for OSX. I assume this works for linux; please verify. Also if specs need to be added, please suggest
an implementation as there is no __test__ dir for andriod.
using yargs (already a dependency) to allow other terminals besides OSX crummy default terminal. Like (iterm) :)
main use case:
` react-native run-android --open iterm`
The nice thing about this in ITERM is it opens another tab by default which is way less intrusive then OSX default term.
Closes https://github.com/facebook/react-native/pull/5232
Differential Revision: D3011590
Pulled By: mkonicek
fb-gh-sync-id: 7e2a004b3018b4d70aafadf4e9be9682561d7919
shipit-source-id: 7e2a004b3018b4d70aafadf4e9be9682561d7919