Step 1:
A visitor visits your site's homepage.
Step 2:

The visitor clicks the plus sign on the bottom of mobile Safari and clicks Add to Home Screen
Step 3:

The visitor types the desired icon tag and click Add
Full Screen Control Panel:
Now when your visitors click on this Home Screen link, mobile Safari will be hidden:

Changing the TapTheme icon to your own icon:
As the site administrator you can upload a new icon, such as your own logo.
If you'd like to create your own custom icon, you can upload new images to templates/tapthemeiphone/images
- iOS-57px.png (this is the low res version for iPhones before the iPhone4)
- iOS-114px.png (this is the high res version for iPhone4)
- iOS72px.png (this is an iPad version just in case iPad visitors bookmark your site)