title: Access files stored on Amazon S3 through web browser
body: <h2>Current Situation</h2>
  <p>I have a project on GitHub that builds after every commit on <a href="http://travis-ci.org/" rel="nofollow noreferrer">Travis-CI</a>. After each successful build Travis uploads the artifacts to an S3 bucket. Is there some way for me to easily let anyone access the files in the bucket? I know I could generate a read-only access key, but it'd be easier for the user to access the files through their web browser.</p>
  <p>I have website hosting enabled with the root document of &quot;.&quot; set.</p>
  <p><img src="https://i.stack.imgur.com/yoee3.png" alt="Screenshot of website hosting setup" /></p>
  <p>However, I still get an 403 Forbidden when trying to go to the bucket's endpoint.</p>
  <p><img src="https://i.stack.imgur.com/o3O4s.png" alt="403 Forbidden" /></p>
  <h2>The Question</h2>
  <p>How can I let users easily browse and download artifacts stored on Amazon S3 from their web browser? Preferably without a third-party client.</p>