Node.js and npm are essential to Angular development.
Get it now if it's not already installed on your machine.
Verify that you are running at least node v4.x.x and npm 3.x.x
by running node -v and npm -v in a terminal/console window.
Older versions produce errors.
We recommend nvm for managing multiple versions of node and npm.
See npm and nvm version notes above
Install the npm packages described in the package.json and verify that it works:
npm install
npm start