Serve a version of ofxSimpleGuiToo in your web browser.
Add it to your project. Add ofxSimpleGuiToo to your project. Instead of
gui.addSlider(...)
use
webGui.addSlider(...)
then call
webGui.startServer()
You also need data/ofxWebSimpleGuiToo/* from the example in your data folder.
then point your browser to http://localhost:8910/