Rook vs Bishop

I finished a game of rook and king vs bishop and king only, is there any general way to force mate if you are a rook and king?

Except you need to use both colour squares to drive the king back.  You need to get the kings in opposition in a rook and king ending.  You cant do this if there's a bishop controlling important squares. 

It's a book draw in most positions i think.  

[edit] The position shown is definitely a draw.  I checked it in a tablebase just to make sure.   

Tonydal is right.

it is a theoretical draw unless the bishop is really badly placed. the drawing tecnique involves putting the defending king in a corner opposite to the color of your bishop.
knowing this , you may try to trick your opponent by forcing them on the wrong color corner.