HashThemes Demo Importer imports the full demo with just one click. It is specially developed to add a demo importer functionality in the theme developed by HashThemes but it can also be used by any other themes as well.
You just need to define the array that includes the location of the demo zip files and other informations. The other information includes name of the demo, preview image, theme option array, menu array, home page and blog page slug(if any), required plugins array and the tags that categorizes the theme.
The demo zip should contain the XML file, customizer (.dat) file, widget (.wie) file, theme option (.json), revolutions slider zip. It is not necessary to add all these files in the demo zip. You can skip the files if your demo does not need it.