Added /.cbfs/nodes/ to get a node list.
Added /.cbfs/nodes/ to get a node list.

Example:

    {
        "altnode": {
            "addr": "127.0.0.1:8585",
            "addr_raw": "127.0.0.1",
            "bindaddr": ":8585",
            "hash": "sha1",
            "hbage_ms": 38785,
            "hbage_str": "38.785459376s",
            "hbtime": "2012-09-18T16:22:32.054816354Z",
            "size": 120592
        },
        "nodeone": {
            "addr": "127.0.0.1:8484",
            "addr_raw": "127.0.0.1",
            "bindaddr": ":8484",
            "hash": "sha1",
            "hbage_ms": 431,
            "hbage_str": "431.111629ms",
            "hbtime": "2012-09-18T16:23:10.409210801Z",
            "size": 466439872.0
        }
    }

Closes #37

couchbaselabs/cbfs,couchbaselabs/cbfs,couchbaselabs/cbfs