Reduce or entirely remove hands-on activities in R from Intro

[hlapp]

Issue #10 was a step towards making the Intro more language agnostic, but we're still finding ourselves with too much hands-on activities modifying RMarkdown documents. The type of activity is useful per se, but in the morning it's taking too much time away from the File Naming and Organization lesson, and as we have discussed, we want to concentrate the Rmarkdown hands-on time in the Literate Programming lesson.

[mine-cetinkaya-rundel]

The intention was that they don't modify the document at all, just watch the R Markdown demo. But perhaps it's too tempting for them to modify the document? Options are (1) remove all R Markdown bits from intro and (2) don't distribute the R Markdown template so participants only watch the demo. I feel like (1) would basically take out the interesting part of the intro lesson, and (2) will result in participants asking for the file anyway. But with (2) the file could be distributed during coffee break, so if participants want to play with it afterwards they can.

[kcranston]

Ah, I see the code in the intro-template.Rmd doc, and in fact also see text to that effect in the instructor notes. I think we just need to modify the slide, which makes it seem like an exercise for the students. (We can chalk all of this up to me being a mostly unprepared instructor and reacting to the slides as they appeared on the screen, rather than knowing what is coming next...).

[mine-cetinkaya-rundel]

Does this commit address this issue?