locally, building example contracts on Windows broken (mkdir issue)

[mikedotexe]

mkdir -p out/ && gulp is used in the build process for the examples.
Windows does not have the -p flag and throws an unhelpful error.
Vlad added the out/ directory with a .gitignore file in them a while ago.
Since Studio is getting sunsetted and the out/ directory exists, I suggest the quick fix or removing the mkdir -p out/ section of gulp.

Downsides: if the user deletes the out/ folder manually, gulp will throw an error.