Sorry to say you that for now we don’t have documentation on shortcodes, but we will soon make it available.
For now to use shortcode button you can use this shortcode:
[button color=green link=#]Green[/button]
You can change the button color by changing color arguments.
Also please find the attached file for the demo page content, unzip that folder and paste whole content on page editor ,switching to text mode. This way you will get all the shortcode available and can replace demo content with your own.
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