a problem in parse_etcd_response

[jpuyy]

I got an error print out

  File "/Users/jpuyy/bin/automation/etcd.py", line 32, in parse_etcd_response
    if 'dir' in data and data['dir'] and data['nodes']:
KeyError: 'nodes'

Because the directory is empty. So I changed from here.
https://github.com/oreh/simpletcd/blob/master/simpletcd/etcd.py#L106

if 'dir' in data and data['dir'] and data.get('nodes'):
    result[key] = {}
    for n in data['nodes']:
        result[key].update(parse_etcd_response(n, data['key']))
elif data.get('value'):
    result[key] = data['value']
else:
    result[key] = ''