Auto-resize

[blairneumann]

We're currently sized for iPhone 5. We should dynamically re-size to the available viewport.

[blairneumann]

Updated to always fit the whole viewport exactly with content pinned to the top, middle, and bottom. Content is still sized to fit on an iPhone 5 which is the min size that fits in one viewport.

The intent of this issue is that we should use up more available whitespace when possible, such as creating bigger numbers to play with.