When attempting to build you get the message
Could not instantiate class named WKWebView because no class named WKWebView was found
This is because you have to add the webkit framework to the build.
Select (PROJECT) BullsEye, (TARGETS) BullsEye, (TAB) BuildPhases,
Open “Link Binary With Libraries”
Click plus
(Search) webkit
select webkit.framework
Now try to build it.