Tinymce integration help

[XY]

Hi,
I am having problem integrating PaintWeb in the Tinymce,
under the documentation configuration provided:

paintweb_config: {
configFile: "config-example.json",
tinymce: {
paintwebFolder: "../build/",
imageSaveDataURL: true,
overlayButton: true,
contextMenuItem: true,
dblclickHandler: true,
pluginBar: true,
syncViewportSize: true
}

in the ext/tinymce-plugin/paintweb folder, there does not seem to be a
'build' folder, which paintwebFolder is trying to link to.

Currently on click painweb icon in the Tinymce, on click edit image,
nothing happens.
Please advice me.

Thanks!