Quick post, today I was asked to look in to making a simple iOS8 widget that displayed some contacts with status updates, A Widget is a kind of iOS8 extension that is part of your main app but a separate target. The widget needed to be displayed under the Today notification center.
The first guide I followed showed that Apple had done a really good job on making this super simple!
iOS8 : Creating a Today Widget
Then I needed to share simple data between my parent app and the widget
Sharing NSUserDefaults between your app and a Today Extension on iOS8
The last bit was to make it clickable so that it took you to the main app