Set pylint version to ensure compatibility with python 2.6

diff --git a/.travis.yml b/.travis.yml
index 207dc000a2ff331c5a2736a4c50ee4040901043b..910b2c9fb3ed29b08a5373d6ebdeca98a3def650 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ python:
 
 # command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
 install:
-    - pip install nose mock coverage pep8 pylint
+    - pip install nose mock coverage pep8 "pylint<1.4"
     - python setup.py develop
 
 # command to run tests, e.g. python setup.py test