title: 400 Error with Javascript Rdio API
body: <p>Any thoughts on why I'm getting a "Failed to load resource: the server responded with a status of 400 (Bad Request)" in the Javascript on my client? (client-id obscured, I have one for an Oauth2.0 app via registration Rdio site)</p>
  
  <p>index.html:</p>
  
  <pre><code> &lt;script src="https://www.rdio.com/api/api.js?client_id=12345678"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>response:</p>
  
  <pre><code>https://www.rdio.com/oauth2/authorize/auto?response_type=token&amp;client_id=12345678&amp;showSignup=true&amp;redirect_uri=http%3A%2F%2Flocalhost%3A8080%2Fhelper.html%3Fclient_id%3D12345678
  
  Failed to load resource: the server responded with a status of 400 (Bad Request)
  </code></pre>
  
  <p>John</p>