There are many themes which offer Quick installation or 1 click installer which not only activates the theme but also installs the Sample data (same as shown on theme demo). My Question is how can we add that functionality in our theme?
Some themes offering this feature are this and this
https://magento.stackexchange.com/questions/17629
italiano
english
français
española
中国
日本の
العربية
Deutsch
한국어
Português
Russian