code: function remove (from, what) {
    // TODO array coerce trick
    if (!_.isArray(what)) { what = [what] }
    return W.map(what, (p) => {
      return fs.unlinkSync(path.resolve(from, p))
    }
    )
  }
docs: /*
  Remove files.
  @param {String} from - base path to resolve.
  @param {String[]} what - the path(s) to remove.
  @return {Promise} -  a promise to remove the file