I won't spend time talking about the pinouts for the stackable connectors, since you should know about that if you have a working Jaluino board. The rest is pretty simple too. Servo headers are connected to the bottom 16 I/O pins along with an independant power source (X1 between the power connector to the Jaluino board and the leftmost servo header.) There is also a header (SV1) top right for a KTM-S1201 serial LCD module. These are amazingly cheap serial modules available on ebay currently for a couple dollars.
R2 is a small trim potentiometer for controlling the contrast of the LDC module, and the switch on the bottom right is connected to the LCD reset pin, while R1 ties LDC rest high when the button is not pressed. I also filled in the empty spaces with pads to serve as prototyping space, since there was extra room.
Black and white foil side artwork is here.in the downloads section as are the eagle files for those who like to tinker.