Hi,

We would like to use this module in django project (for filling settings on startup), yet we cannot afford any delay on boot, so I added support for requests' timeout parameter. Would you like to merge it?

Sample usage:

start test server that will timeout when client connects:

nc -lp 8501

run code that will throw timeout after 5 seconds:

import consul
import requests

try:
   consl = consul.Consul(host='localhost', port=8501, timeout=5)
   index, values = consl.kv.get('key', recurse=True)
except requests.Timeout:
   print 'timeout occurred'