Changes when adding strings and images

I took another stab at this by creating a branch instead of using my forked master (git noob here). 
I also found a weird bug that was causing buttons with just text in a titled Popover to be resized past the width of the popover. Take a look at commit bfe1db9 for more info.

**Changes:**

* kImageAboveLabel - bool value that positions icons/images above or to the left of labels
* kImageTitlePadding - padding between icons/images and titles in both horizontal and vertical
* UIButtons generated for both horizontal and vertical settings