boilerplate-project-npm

chore(project): whitelist (unignore) README's in blacklisted directories

 - Whitelisting is better done after blacklisting;
 - Will only work if directories are blacklisted as `<directory>/*`;

   See:  https://git-scm.com/docs/gitignore#_pattern_format

   > It is not possible to re-include a file if a parent directory of that file is excluded. Git doesn’t list excluded directories for performance reasons, so any patterns on contained files have no effect, no matter where they are defined.