Update README.md

Author: jpaulm

README.md

@@ -203,6 +203,8 @@ Finally, I thought I would include a schematic of the server side of a Brokerage
 
 ![Brokerage App Schematic](https://jpaulm.github.io/fbp/EB2a.jpg "Schematic for Server Side of Brokerage Application (expand blocks, add caches, multiplexing)")
 
+Fig. 5.
+
 It is of interest because it shows additional paths through the network, but to make a full-fledged app, it will need caches, subnets to be expanded, and parts can be multiplexed for performance.  The processes called "Back-end" communicate with offline (usually batch) functions, so their resulting outputs have to be coordinated with the requests sent to them.  
 
 The client side is represented only by the little stick figures - obviously they do not result in any code being generated (in *this* network)...