Sets the supported architecture to armv7 and armv7s
Merge branch 'master' of https://github.com/smorel/AppCoreKit
CKTabViewController: Adds the ability to customize tabViewItem stylesheet in the child controller's stylesheet by targeting the key "tabViewItem".

Example:

"MyViewController" : {
    "tabViewItem" : {
        //Specify style using UIButton properties
    }
}