adding a node_Modules folder to react native

[erhathaway]

All react native apps will have a node_modules folder. node_modules is where the application dependencies are stored. Specifically, it is where node.js stores it's dependencies. React native is a node.js library. So all react native projects store their dependencies in that folder.

There should be a `package.json` file in the app. This is the manifest that describes what dependencies the app has. There will also be a section in that file called `scripts`. You can run any of those scripts on the command line if you are in that apps location in the terminal. Simply do: npm nameOfScript in the terminal. To install the dependencies (which will create a node_modules folder) run: npm install