user contributed example: fixed-width file

[MonkmanMH]

I have written a blog post using a fixed-width version of the palmerpenguins data
https://martinmonkman.com/post/2020-09-15_penguins/

Title: Importing fixed-width files
Description: Examples using the functions in the {readr} package to import a fixed-width version of the palmerpenguins data.

If you are interested, I can submit a pull request with the R code to generate the fixed-width version and the .txt file. See
https://github.com/MonkmanMH/palmerpenguins/tree/master/data-fwf
for details

Thanks for the super data!