add initial circle ci config

.circleci/config.yml

+version: 2
+jobs:
+  build:
+    working_directory: ~/kszkepzes
+    docker:
+      - image: circleci/python:3.6.4
+    steps:
+      - checkout
+      - run: sudo chown -R circleci:circleci /usr/local/bin
+      - run: sudo chown -R circleci:circleci /usr/local/lib/python3.6/site-packages
+      - restore_cache:
+          key: deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }}
+      - run:
+          command: |
+            sudo pip install -r requirements/development.txt
+      - save_cache:
+          key: deps9-{{ .Branch }}-{{ checksum "Pipfile.lock" }}
+          paths:
+            - ".venv"
+            - "/usr/local/bin"
+            - "/usr/local/lib/python3.6/site-packages"
+      - run:
+          command: |
+            flake8 --max-line-length=125 --exclude=src/kszkepzes,migrations
+            python manage.py migrate
+            python manage.py test
+      - store_test_results:
+          path: test-results
+      - store_artifacts:
+          path: test-results
+          destination: tr1