/**
 * Get the content of a file.
 *
 * @name Ape.readfile
 * @function
 * @public
 * @static
 * @deprecated Please use Ape.os.readfile
 *
 * @param {string} filename The filename to read
 * @returns {string} The content of the file or NULL
 *
 * @example
 * var content = Ape.readfile('/etc/hosts');
 *
 * @see Ape.os.readfile
 */