code: function moveFilesToRoot(subdir) {
    return exec(`mv ${docPath}/${subdir}/* ${docPath}`)
      .then(() => {
        exec(`rmdir ${docPath}/${subdir}`);
      })
      .catch(e => console.error(e));
  }
docs: Moves files from subdir to root.
  @param {string} subdir Subdir to move files out of.