Won't work on Linux due to shopt: not found

[jfrancos]

shopt -s dotglob allows * to match hidden files. Without this, hidden files won't get copied when merging.

shopt appears to be a builtin for sh on mac but not for sh on linux.

Some options:

1. #!/bin/bash
2. Rewrite in js/ts
3. Set this up as a template on its own without the need for create-snowpack-app

[jfrancos]

got around the need for shopt