static getProjectRoot() {
    let packagePath = findup.sync('package.json');
    if (!packagePath) {
      logger.info('getProjectRoot: not found. Will use cwd: %s', process.cwd());
      return process.cwd();
    }

    let directory = path.dirname(packagePath);
    const pkg = require(packagePath);

    if (pkg && pkg.name === 'ember-cli') {
      logger.info("getProjectRoot: named 'ember-cli'. Will use cwd: %s", process.cwd());
      return process.cwd();
    }

    logger.info('getProjectRoot %s -> %s', process.cwd(), directory);
    return directory;
  }
Returns the project root based on the first package.json that is found

    @static
    @method getProjectRoot
    @return {String} The project root directory