don't silence pip

it can provide useful information when you break something

Author: nomad2k

.travis.yml

@@ -25,9 +25,9 @@ before_install:
   - pip install -e git+https://github.com/modoboa/modoboa.git#egg=modoboa
 
 install:
-  - pip install -q -r requirements.txt
-  - pip install -q -r test-requirements.txt
-  - python setup.py -q develop
+  - pip install -r requirements.txt
+  - pip install -r test-requirements.txt
+  - python setup.py develop
 
 script:
   - cd test_project