code: function findFileLocation(file) {
    let location = './';
    while (true) {
      if (exists(location + file)) {
        break;
      } else if (exists(location + 'package.json') || location === '/') {
        // Assumption is that reaching the app root folder or the system '/' marks the end of the search
        throw new Error(`Failed to find file "${file}" within the project`);
      }
      // Go one level up
      location = path.resolve('../' + location) + '/';
    }
    return location;
  }
docs: Goes up folder hierarchy looking for encrypted file; search stops when either root folder or folder with 'package.json' is reached
  @param     {String}     file     the file to look for
  @returns   {String}              the full pathname of passed @file or throws error if not found