Adding travis and circleci configs

.circleci/config.yml

@@ -0,0 +1,7 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/python:3.7-node-browsers
+    steps:
+      - run: echo "hello world"

.travis.yml

@@ -0,0 +1,24 @@
+# https://travis-ci.org/hardikp/service_demo
+language: python
+dist: xenial
+git:
+  submodules: false
+
+# This reportedly works around an issue downloading packages from pypi on
+# travis. Consider removing this after the underlying issue is fixed.
+# https://github.com/travis-ci/travis-ci/issues/2389
+sudo: false
+
+matrix:
+    fast_finish: true
+    include:
+      - env: LINT_CHECK
+        python: "3.7"
+        dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
+        sudo: required  # required for Python 3.7 (travis-ci/travis-ci#9069)
+        install: pip install flake8
+        script: flake8
+      - env: MYPY_TYPE_CHECK
+        python: "3.6"
+        install: pip install mypy mypy-extensions
+        script: mypy @mypy-files.txt