Description:
Letsencrypt erroring when trying to run it.

Additional info:
* package version(s)
letsencrypt 0.1.0-1


Steps to reproduce:

Running the Letsencrypt bin on the shell:

=====
~ % letsencrypt
Traceback (most recent call last):
File "/usr/bin/letsencrypt", line 9, in <module>
load_entry_point('letsencrypt==0.1.0', 'console_scripts', 'letsencrypt')()
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 568, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2720, in load_entry_point
return ep.load()
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2380, in load
return self.resolve()
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2386, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/usr/lib/python2.7/site-packages/letsencrypt/cli.py", line 26, in <module>
from letsencrypt import account
File "/usr/lib/python2.7/site-packages/letsencrypt/account.py", line 15, in <module>
from acme import messages
File "/usr/lib/python2.7/site-packages/acme/messages.py", line 4, in <module>
from acme import challenges
File "/usr/lib/python2.7/site-packages/acme/challenges.py", line 10, in <module>
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 60, in <module>
from .api import request, get, head, post, patch, put, delete, options
File "/usr/lib/python2.7/site-packages/requests/api.py", line 14, in <module>
from . import sessions
File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 27, in <module>
from .adapters import HTTPAdapter
File "/usr/lib/python2.7/site-packages/requests/adapters.py", line 27, in <module>
from .packages.urllib3.exceptions import NewConnectionError
ImportError: cannot import name NewConnectionError
====