Homework 06: Spring clean your course repo; Extend your figure-making prowess; Get some new data

Idea #1: Clean up your README.md. When you’re done, there will be two documents:
- A proper README that introduces you to the class and holds a nice index (see below).
- A separate HW01 document, in which you fool around with Markdown. You might want to extend it or create a companion to document key features of R Markdown.
Idea #2: Create a useful index into your homework. This mostly means annotating links with a description.
- Useful to you in 6 months: “HW03: Manipulate and summarize the Gapminder data with dplyr; make companion figs with ggplot2”
- Mysterious and frustrating: “HW03”
Idea #3: Give your repo some subdirectory structure and update all paths so your scripts still run and your R markdown still compiles. Rename files to enforce some global convention. Update the index to reflect all of this.
- FYI I have a new idea for easing the pain of rendering R Markdown documents that live in sub-directories of an RStudio Project. This is an alternative to manually changing your working directory.
Idea #4: Remake at least one figure from past homework, in light of something you learned in cm012 2014-10-15 Wednesday.
Idea #5: Identify some non-Gapminder data that interests you and might interest others. Get it ready for analysis (or get a handle on how difficult that will be). Feel free to team up with others for selection and cleaning – in fact, I recommend it! See the Discussion thread for ideas.