Steve Kellock 3415e31f46 Adds additional help when a module is missing.
Summary:Hey.  Long time fan, first time forker.

You know when you're working on a project with someone and they bring in a new dependency?

When you first pull their code and you haven't also installed that dependency, the error that is shown is this:

![image](https://cloud.githubusercontent.com/assets/68273/13145164/d8748b3e-d61c-11e5-9df9-3e47edf3fcfb.png)

This PR simply adds  `or running "npm install"` to the end of that message.

Just adds a little clarity to newcomers.  Hell knows I was lost for a while when I was starting.

![image](https://cloud.githubusercontent.com/assets/68273/13145253/65e8f31a-d61d-11e5-99ac-2d79d8e37123.png)
Closes https://github.com/facebook/react-native/pull/6009

Differential Revision: D2949127

Pulled By: davidaurelio

fb-gh-sync-id: b297d8c1570fec23cb179ddab4847e2438cc463b
shipit-source-id: b297d8c1570fec23cb179ddab4847e2438cc463b
2016-02-18 07:36:35 -08:00
..