Improve links to tidyverse cheatsheets and package sites #526
Description
How could the content be improved?
- Links to dplyr and tidyr cheatsheets link directly to download of PDF. It would be better to link to their location on GitHub as is done in the websites for these packages.
- Add link to ggplot2 and RMarkdown cheatsheets at beginning of those episodes.
- Should have direct links to the tidyverse package websites in episodes 4–7.
- Update links to RMarkdown resources