title: boto3: create_tags on an ec2 instance gives TypeError
body: <p>I am trying to add a tag to existing ec2 instances using create_tags.</p>
  
  <pre><code>ec2 = boto3.resource('ec2', region_name=region)
  instances =   ec2.instances.filter(Filters=[{'Name': 'instance-state-name',
                                               'Values': ['running']}])
  for instance in instances:
    ec2.create_tags([instance.id], {"TagName": "TagValue"})
  </code></pre>
  
  <p>This is giving me this error:</p>
  
  <pre><code>TypeError: create_tags() takes exactly 1 argument (3 given)
  </code></pre>