title: Atom auto tslint detection
body: <p>Recently I opened Angular 2 project in my freshly installed atom editor(with <a href="https://atom.io/packages/atom-typescript" rel="nofollow noreferrer">https://atom.io/packages/atom-typescript</a> and linter). 
  I was surprised with the fact that atom automatically detected tslint.json file in project root directory and apply those rules to highlight errors. </p>
  
  <p>Can someone explain to me, how did this happen? </p>