Auto Layout examples using Interface Builder and in code.

• Proportional spacing using Interface Builder
• Proportional spacing using code
• Proportional spacing using a stack view
• Layout Anchors
• Layout Guides as spacer views

See the following posts further details:

• Proportional Spacing with Auto Layout
• Adapting Images for Size Classes
• Pain Free Constraints with Layout Anchors

• Version 1.3 27 Feb 2016 Using layout guides to space views
• Version 1.2 22 Feb 2016 Example of using layout anchors
• Version 1.1 31 Jan 2016 Custom Asset catalog for size classes.
• Version 1.0 15 Jan 2016 Initial Version