BUG: Styleguide directory is expected to exist when `npm run docs` starts

[zastrow]

This seems like an oversight on my part. The MDCSS process creates the styleguide directory, but the first task in the docs process is to remove all content from the styleguide directory. When the project is first pulled down the directory does not exist yet, which causes the npm run docs process to fail from the start.

Need to change how the clean task runs so it does not disrupt the build.