code: function initMembers(rootPath) {
  
      this._rootPath = rootPath;
      ShellJS.mkdir(this._rootPath);
  
      this._appPath = this._rootPath + Path.sep + "app";
      ShellJS.mkdir(this._appPath);
  
      this._logPath = Path.join(OS.tmpdir(), "crosswalk-app-tools-" + this._packageId);
      ShellJS.mkdir(this._logPath);
  
      // Packages end up in working dir
      this._pkgPath = process.cwd();
  
      this._prjPath = this._rootPath + Path.sep + "prj";
      ShellJS.mkdir(this._prjPath);
  }
docs: Initialize paths.
  @param {String} rootPath Root path inside the project