message: readme: replace yarn with npm
diff: @@ -241,7 +241,9 @@ airbrake-js automatically setups `window.onerror` handler when script is loaded.
  var airbrake = new airbrakeJs.Client({ignoreWindowError: true});
  ```
  -## What does "Script error" mean?
  +## FAQ
  +
  +### What does "Script error" mean?
  See https://developer.mozilla.org/en/docs/Web/API/GlobalEventHandlers/onerror#Notes.
  @@ -250,19 +252,19 @@ See https://developer.mozilla.org/en/docs/Web/API/GlobalEventHandlers/onerror#No
  Install dependencies:
  ```bash
  -npm install
  +yarn install
  ```
  Run unit tests:
  ```bash
  -karma start
  +yarn test
  ```
  Build project:
  ```bash
  -webpack
  +yarn build
  ```
  ## Credits
  