title: Subscription with ngx-stripe
body: <p>Does someone know or have an of how explain me how does ngx-stripe works to make a subscription.</p>
  <p>I try to make it with cURL but i can't.</p>
  <p>I can make the token card but what's next?</p>
  <p>I have mi frontend with Angular and my backend with laravel.</p>
  <p>I undestand that I need to make the token, then the customer and at last the subscription. but I don't know how, I already read the docs but I'm still stuck</p>