Check if UNIX Path has Hidden Directory or File

This snippet of code uses regular expression to test if a path string contains any hidden directory. The use-case was derived from the difficulty in determining whether directory is hidden or not using NodeJS path module. Owing to the possibility of their existence within a long path string, this function returns false if any directory or the terminal file of a path has a name that starts with a dot.

A relevant StackOverflow question is located at http://stackoverflow.com/questions/8905680/nodejs-check-for-hidden-files/ and a gist is at https://gist.github.com/shamasis/7704671