in Servoy Developer add all the js & css files of the 3rd party plugin as Media; all the js & css files from here will be added to the mobile page;
if the plugin requires static html content already on the page, you can do this by placing a bean on the form, that is actually an empty div, and setting its "text" property (innerHTML) with the static html content;
another usefull function that can be used when integrating 3rd party plugins is that from the mobile plugin : plugins.mobile.getMarkupId(), using this you can retrieves document markup id for a Servoy form elements and customize them;
3rd party plugins initialization code should be placed inside the form onLoad callback,that is called after the page is ready for display, but before showing it; Ex.: