[FEATURE] timepiece (and more) support

Squashed commit of the following:

commit 76afcbe5f6f215c7478ca3c9d14fb8a43fe7600c
Author: Dana Franklin <danaf@mediaartslab.com>
Date:   Thu May 15 19:46:22 2014 -0700

    Added Autoprefixer support

commit 41af0adf78cb9d2c91e6e94b84ec80b3b6907e31
Author: Dana Franklin <danaf@mediaartslab.com>
Date:   Wed May 14 15:09:14 2014 -0700

    Initial setup for use of broccoli-timepiece