In your purchased Main files (Butter – Professional Restaurant WordPress Theme.zip) you should find a .xml file of demo data. The file name is: Butter_demo_data.xml. You need to import that .xml file. Here we are describing how to do that.
Navigate to Tools > Import from your WordPress Admin Dashboard. There you will see a list of import systems (blogger, blogroll, wordpress etc). Choose WordPress from there and you will be asked to install the WordPress Importer plugin.
After installing and activating the WordPress Importer plugin you will need to upload our demo data xml file: Butter_demo_data.xml and click Import. Wait for a few seconds and you are – All done – Have fun!