Change app font to Roboto

[5calls]

Change app font to Roboto

[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).