recurrent: change Bidirectional __init__() to support loading
recurrent: change Bidirectional __init__() to support loading

In order to support loading Bidirectional layer from container config
(like container_from_config in keras), support supplying dictionary for
initializing the forward and backward components.

Signed-off-by: Amit Beka <feb9f1199bc383ad0266545392aa23bd5a177c94@gmail.com>

EderSantana/seya