Add an example that shows deployment vs runtime

[lindydonna]

A simple example that shows deployment time vs. runtime (f.k.a. "inside" vs "outside") show the difference between getting the current date/time inside the body of a Lambda vs. a declaration outside.

[lukehoban]

I think we have examples that cover the useful scenarios here. Our quickstart and programming model docs should highlight this in a simpler setting - but I don't beleive we need a dedicated sample for this. Let's focus on fleshing out quickstart and programming model docs first and we can see what makes sense for this in those two contexts.

[lindydonna]

Agreed, the idea was to have an example in the doc itself, not a standalone example in the repo. I'd suggest putting this in the programming model doc, but I'll move the suggestion to a bullet within the doc itself.