Added setuptools to travis-ci test.

.travis.yml

@@ -3,7 +3,7 @@ python:
   - "2.7"
 install:
     - sudo apt-get update -qq
-    - sudo apt-get install -qq python-dev python-pip python-yaml g++
+    - sudo apt-get install -qq python-dev python-pip python-yaml python-setuptools g++
     - sudo pip install conda
     - sudo conda init
     - conda config --add channels http://conda.binstar.org/omnia