Testing using rvm: 1.9.3 to solve segmentation fault

Signed-off-by: Christian Tremblay <christian.tremblay@servisys.com>

.travis.yml

@@ -1,4 +1,5 @@
 language: python
+rvm: 1.9.3
 python:
 - '3.3'
 - '3.4'
@@ -11,7 +12,7 @@ install:
 - pip install coveralls
 - pip install nose
 script:
-- nosetests --with-coverage --cover-package=BAC0
+- nosetests --with-coverage --cover-package=BAC0 -v
 after_success: coveralls
 
 deploy: