Add optional payload to ajsonp
Add optional payload to ajsonp

jlhughes/foam,mdittmer/foam,mdittmer/foam,jlhughes/foam,foam-framework/foam,jacksonic/foam,shepheb/foam,foam-framework/foam,jacksonic/foam,jacksonic/foam,mdittmer/foam,osric-the-knight/foam,shepheb/foam,foam-framework/foam,osric-the-knight/foam,jacksonic/foam,foam-framework/foam,foam-framework/foam,mdittmer/foam,jlhughes/foam,jlhughes/foam,osric-the-knight/foam,shepheb/foam,osric-the-knight/foam