Add Layout margin controls to IB. I hope Apple eventually integrates a layoutMargin attribute control into IB, until then this should do the trick. Just drop it in to your project and it should show up in IB. For iOS 8.0 and up

UIViewIBLayoutMarginSupport.swift

//  UIViewIBLayoutMarginSupport.swift
//  Created by Matt McMurry on 5/26/15.

import UIKit

public extension UIView {
    @IBInspectable public var leftLayoutMagrin: CGFloat {
        set {
            var margins = layoutMargins
            margins.left = newValue
            layoutMargins = margins
        }
        get {
            return layoutMargins.left
        }
    }
    
    @IBInspectable public var rightLayoutMagrin: CGFloat {
        set {
            var margins = layoutMargins
            margins.right = newValue
            layoutMargins = margins
        }
        get {
            return layoutMargins.right
        }
    }
    
    @IBInspectable public var topLayoutMagrin: CGFloat {
        set {
            var margins = layoutMargins
            margins.top = newValue
            layoutMargins = margins
        }
        get {
            return layoutMargins.top
        }
    }
    
    @IBInspectable public var bottomLayoutMagrin: CGFloat {
        set {
            var margins = layoutMargins
            margins.bottom = newValue
            layoutMargins = margins
        }
        get {
            return layoutMargins.bottom
        }
    }
}