code: function openExplorer(path, callback) {
      if (osType == 'Windows_NT') {
          openExplorerinWindows(path, callback);
      }
      else if (osType == 'Darwin') {
          openExplorerinMac(path, callback);
      }
      else {
          openExplorerinLinux(path, callback);
      }
  }
docs: Opens the Explorer and executes the callback function
  @param {string} path The path string to be opened in the explorer
  @param {Function} callback Callback function to which error is passed if some error occurs