Edits of awesome new vignette

[michaelquinn32]

Hi @elinw!

Love the new vignette.

I took a pass at it to

• reformat the code with styler
• clean up some of the Rmd text (mostly enforcing strict 80 char line lenth)
• simplify some of the code

Here's where I got to. https://rpubs.com/michaelquinn32/extending_skimr

Please let me know what you think!

Thanks!

[michaelquinn32]

Also, your original version was already merged, because I accidentally folded it into a previous commit. Sorry about that!

[elinw]

Ha was just also deleting the old one and adding to the news. I'm really happy with this one!

[elinw]

Fixed a couple of typos.