options for express.static

I went to set maxAge for some static assets and realized we're only accepting the path.  

Other options include (from connect.static - )...
https://github.com/senchalabs/connect/blob/master/lib/middleware/static.js
 * Options:
 *
 *    - `maxAge`     Browser cache maxAge in milliseconds. defaults to 0
 *    - `hidden`     Allow transfer of hidden files. defaults to false
 *    - `redirect`   Redirect to trailing "/" when the pathname is a dir. defaults to true