solutions to the first 100 Project Euler puzzles

properly indicate R code chunks

add solution to puzzle 0002

improve README

- read-only
- https://git.sr.ht/~puer-robustus/project-euler
- read/write
- git@git.sr.ht:~puer-robustus/project-euler

My R solutions to the first 100 Project Euler puzzles. Unfortunately, publishing the solutions to later puzzles is disallowed by the project.

If you want to convert the .Rmd files to easier-to-read .html files you can use

```
rmarkdown::render("problems/<problem_number>.Rmd")
```

from an interactive R console, provided that you have the `knitr`

and
`rmarkdown`

R packages as well as `pandoc`

installed.