I am following the instructions to install KIF from Github, which provide a very detailed step-by-step tour of things to do to make it work. That is, until it reaches this point.
KIF requires the IOKit.framework. Unfortunately as of Xcode 6.3 you need to manually add IOKit from the Xcode.app bundle. After doing so remove
$(DEVELOPER_DIR)/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworksfrom the Framework Search Path setting (Xcode automatically adds it after manually importing).
What does it mean to add something from a bundle? Is there a step-by-step instruction available what I should do to make this happen?
That means you have to drag and drop the IOKit.framework in Build Phases in the project settings manually because it's not in the picker when you hit the plus button.
You can find the framework here for example:
Macintosh HD/Applications/Xcode/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.2.sdk/System/Library/Frameworks