message: installation instructions for AWS Athena
diff: @@ -206,12 +206,29 @@ Here's a list of some of the recommended packages.
  +---------------+-------------------------------------+-------------------------------------------------+
  | Greenplum | ``pip install psycopg2`` | ``postgresql+psycopg2://`` |
  +---------------+-------------------------------------+-------------------------------------------------+
  +| Athena | ``pip install "PyAthenaJDBC>1.0.9"``| ``awsathena+jdbc://`` |
  ++---------------+-------------------------------------+-------------------------------------------------+
  Note that many other database are supported, the main criteria being the
  existence of a functional SqlAlchemy dialect and Python driver. Googling
  the keyword ``sqlalchemy`` in addition of a keyword that describes the
  database you want to connect to should get you to the right place.
  +(AWS) Athena
  +------------
  +
  +This currently relies on an unreleased future version of `PyAthenaJDBC <https://github.com/laughingman7743/PyAthenaJDBC>`_. If you're adventurous or simply impatient, you can install directly from git: ::
  +
  + pip install git+https://github.com/laughingman7743/PyAthenaJDBC@support_sqlalchemy
  +
  +The connection string for Athena looks like this ::
  +
  + awsathena+jdbc://{aws_access_key_id}:{aws_secret_access_key}@athena.{region_name}.amazonaws.com/{schema_name}?s3_staging_dir={s3_staging_dir}&...
  +
  +Where you need to escape/encode at least the s3_staging_dir, i.e., ::
  +
  + s3://... -> s3%3A//...
  +
  Caching
  -------
  