title: Open S3 object as a string with Boto3
body: <p>I'm aware that with Boto 2 it's possible to open an S3 object as a string with: <a href="http://boto.readthedocs.org/en/latest/ref/file.html?highlight=contents%20string#boto.file.key.Key.get_contents_as_string" rel="noreferrer"><code>get_contents_as_string()</code></a></p>
  
  <p>Is there an equivalent function in boto3 ? </p>