title: React Native and Stripe Integration 401 Error
body: <p>I am new to React Native and Stripe API and have been trying to integrate the two for my payments module. So initially when I used the code as node.js docs described I'm getting an error because of HTTP module that is not available in React Native.</p>
  
  <p>Until I encountered this blog describing a workaround using the Fetch API instead of the usual Stripe implementation. But when I run my code I am getting a 401 error which means Unauthorized or the key is invalid. Considering that my implementation and key is correct, what could be causing this error? Here's a sample code:</p>
  
  <pre><code>fetch('https://api.stripe.com/v1/customers', {
     method: 'post',
     headers: {
       'Accept': 'application/json',
       'Authorization': 'Bearer MY_TEST_KEY'
     },
     body: JSON.stringify({
       firstName: 'John',
       lastName: 'Doe'
     })
  })
  </code></pre>
  
  <p>Thanks in advance!</p>