add requirements and configuration gitlab-ci

.gitlab-ci.yml

@@ -1,2 +1,7 @@
-test_app:
+before_script:
+  - pip install -r requirements/base.txt
+
+test:python-3.4:
+  stage: test
+  image: python:3.4-slim
   script: python src/manage.py test *

requirements/base.txt

@@ -0,0 +1 @@
+django