Again, purely personal opinion.
I think first making the environment run before editing is the more natural way.
For example, it reassures the contributor that everything works BEFORE the editing.
If you like the other order more, feel free to drop this commit!
This is purely my personal opinion and meant as a suggestion rather than a fix!
I would want the "Optional" in front so when I just want to edit one line in the docs, I know right away that I can skip it.
Again: Personal opinion. Feel free to drop.
As far as I can see simply running `npm install` does the same (or even more) than installing the dependencies manually.
You might know more than me,
but this is what 4 years in NodeJS development told me :)
