Change app font to Roboto

[subdigital]

In matching the style of the website, I'd like to embed the Roboto font and use it where appropriate.

Definitely for the copy in the walkthrough, but probably for all labels, buttons, view controller titles, etc. (we can probably accomplish most of this w/ appearance proxies).

Here's a link on how to embed fonts on iOS.

[bjtitus]

I'm taking a look at this today.

[subdigital]

I'd like to try to match the website's style on the walkthrough screen & other areas where rich text is used for labels. I don't know an easy way of doing that w/ Storyboards & custom fonts (outside of doing it all manually). If you have suggestions I'm all ears :)

[bjtitus]

@subdigital @mccarron Whenever you get a chance, check out PR #13 and let me know what you think. I think there are pros and cons but it is a fairly simple implementation, and the text resizing is pretty slick (and I think beneficial for a large audience, I know I've seen many people in Airports who have their font size cranked up).