Add a section to the README about the correct format for `path_to_add`

[lgloege]

I suggest adding documentation to the README outlining how path_to_add should be formatted. For instance, maybe including something like this:

• path_to_add: "." will push the entire repo
• path_to_add: "dir" will only push the contents of "dir"
• check path_to_dir if you receive a "too many symbolic links encountered" error message

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When I tried path_to_add: "/" (which I thought would push the entire repo) I received this error message:

Error: ELOOP: too many symbolic links encountered, stat '/bin/X11/X11/X11/X11/X11/...FileCheck-10'

[vasco-santos]

Hi @lgloege

Thanks for reporting this and apologies for taking so long to get back to you. Would you like to submit a PR with proposed docs? That would be super appreciated