Fix Python 2.6

.travis.yml

@@ -12,7 +12,7 @@ install:
  - sudo apt-get install -qy slirp lxc lxc-docker=0.7.3
  - git clone git://github.com/jpetazzo/sekexe
  - python setup.py install
- - pip install nose==1.3.0
+ - pip install -r requirements-dev.txt
 
 script:
  - pwd

requirements-dev.txt

@@ -1 +1,2 @@
-nose
+nose==1.3.0
+unittest2==0.5.1

tests/testcases.py

@@ -1,7 +1,7 @@
 from docker import Client
 from fig.service import Service
 from fig.cli.utils import docker_url
-from unittest import TestCase
+from unittest2 import TestCase
 
 
 class DockerClientTestCase(TestCase):