I did exactly the steps which are described here in the React-native getting started guide:

<https://facebook.github.io/react-native/docs/getting-started.html>

When I open the Project and build it, the build fails:

> 
> RCTAssert.h file not found' in MyProjectNameTests.m . 
> 
> 
> 

What am I missing? 

Here are the steps from the getting started guide:

> 
> **Requirements**
> 
> 
> OS X - This repo only contains the iOS (7+) implementation right now,
>  and Xcode only runs on Mac.
> 
> 
> Xcode 6.3 or higher is recommended.
> 
> 
> Homebrew is the recommended way to install io.js, watchman, and flow.
> 
> 
> Install io.js 1.0 or newer. io.js is the modern version of Node.
> 
> 
> Install nvm with its setup instructions here. Then run `nvm install
>  iojs-v2 && nvm alias default iojs-v2`, which installs the latest
>  compatible version of io.js and sets up your terminal so that typing
>  node runs io.js. With nvm you can install multiple versions of Node
>  and io.js and easily switch between them.
> 
> 
> New to npm?
> 
> 
> `brew install watchman`. We recommend installing watchman, otherwise
>  you might hit a node file watching bug.
> 
> 
> `brew install flow`. If you want to use flow. We recommend
>  periodically running `brew update && brew upgrade` to keep your
>  programs up-to-date.
> 
> 
>   
> 
> 
> 
> **Quick Start**
> 
> 
> 
> ```
> npm install -g react-native-cli
> 
> react-native init AwesomeProject
> 
> ```
> 
> In the newly created folder AwesomeProject/
> 
> 
> Open AwesomeProject. xcodeproj and hit run in Xcode. Open index.ios.js
>  in your text editor of choice and edit some lines. Hit cmd+R in your
>  iOS simulator to reload the app and see your change!
> 
> 
>