cannot exclude node_modules and .git (and .meteor etc)

`npx sloc --format cli-table --format-option head --exclude "node_modules|.git|.meteor|" . `

this fails, moaning about files in .meteor, which I have told it to exclude(!)

As others have said, the information provided as to how this exclusion string is being processed is very vague, and the lack of good, real-world examples really lets it down.