Added basic travis test

.travis.yml

+sudo: false
+language: python
+python:
+  - "2.7"
+install:
+  - pip install django
+  - pip install -U pip
+  - pip install -r requirements.txt
+  - cp memopol/config.json.sample memopol/config.json
+before_script:
+  - npm install -g bower
+  - bower install
+  - npm install
+script:
+  - ./manage.py migrate
+  - node_modules/gulp/bin/gulp.js less