add a client that reads and writes JSON objects as well as strings

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
export the new JSON redis

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
update readme

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
bump version

Signed-off-by: Tomas Neme <lacrymology@gmail.com>