Trying fix travis 3

Author: pitbulk

.travis.yml

@@ -3,9 +3,9 @@ python:
   - '2.6'
   - '2.7'
 
-pre-install:
+before-install:
   - 'sudo apt-get update -qq'
-  - 'sudo apt-get install -qq libxml2-dev libxmlsec1-dev'
+  - 'sudo apt-get install -qq libxml2-dev libxmlsec1-openssl libxmlsec1-dev'
 install:
   - 'travis_retry pip install .'
   - 'travis_retry pip install -e ".[test]"'