Configuration file

The example configuration file is missing "layers:" as root for all layers.

<pre>
cache:
    type: DiskCache
    root: '../tmp/mapcache'

layers:
  basic:
    type: MapServer
    mapfile: app/map/nic.map
    layers: NIC2,NIC1
    maxresolution: 0.01991484375
    levels: 5
    extension: jpeg
    metatile: true
    metabuffer: 0, 0
    bbox: -87.6903, 10.7075, -82.5921, 15.0259
</pre>
