(bug) step-2-fix Can't find normalize.css

[Lael Birch]

When I run gulp build I get an error:

stream.js:74
      throw er; // Unhandled stream error in pipe.
      ^
Error: ModuleNotFoundError: Module not found: Error: Cannot resolve module 'normalize.css' in /Users/racheltstevens/Jambon/angular-components/client/app

[Lael Birch]

I ran npm install normalize.css to fix this.