title: Posting credit to a bank account uri
body: <p>If I already have the bank account token (id returned by balanced.js), do I need to do a get to credit the account?
  The documentation at: </p>
  
  <p><a href="https://docs.balancedpayments.com/current/api.html?language=php#credit-an-existing-bank-account" rel="nofollow">https://docs.balancedpayments.com/current/api.html?language=php#credit-an-existing-bank-account</a></p>
  
  <p>says: To credit an existing bank account, you simply pass the amount to the nested credit endpoint of a bank account. The credits_uri is a convenient uri provided so that you can simply issue a POST with the amount and a credit shall be created.</p>
  
  <p>But the example given below it, does a get on bank account first and then a credit.
  How do I post to the credits_uri with the amount and other parameters without first doing a get?</p>