[Travis] Add Travis CI (#17)

.travis.yml

@@ -0,0 +1,21 @@
+sudo: required
+language: python
+python:
+    - "3.6"
+services:
+    - docker
+cache: pip
+branches:
+    only:
+    - /.*/
+install:
+    - pip install --upgrade pip
+    - pip install -r requirements.txt
+    - pip install -r requirements_test.txt
+    - python setup.py install
+script:
+    - black --check chainlink/ tests/ setup.py
+    - flake8 --count --config=setup.cfg
+    - py.test -v --cov=chainlink/ tests/ --cov coveralls --cov-report term-missing --doctest-modules
+after_success:
+    - coveralls

README.md

@@ -1,4 +1,8 @@
 # Chainlink
+[![Build Status](https://travis-ci.com/illinois-cs241/chainlink.svg?branch=master)](https://travis-ci.com/illinois-cs241/chainlink)
+[![Coverage Status](https://coveralls.io/repos/github/illinois-cs241/chainlink/badge.svg?branch=master)](https://coveralls.io/github/illinois-cs241/chainlink?branch=master)
+![License](https://img.shields.io/badge/license-NCSA%2FIllinois-blue.svg)
+![Python Versions](https://img.shields.io/badge/python-3.5%20%7C%203.6-blue.svg)
 
 `chainlink` is a Python module for running Docker containers in sequence.
 
@@ -71,7 +75,7 @@ The run function returns a list of object, an example of which is annotated belo
   # immediately before it was removed (see Docker SDK for details)
   "data": { ... },
   # whether or not the stage was killed due to a timeout
-  "killed": False
+  "killed": False,
   # the stdout and stderr (with timestamps) for the stage
   "logs": {
     "stdout": b"bytestring",

requirements_test.txt

@@ -0,0 +1,5 @@
+black
+flake8
+python-coveralls
+pytest-cov
+coverage

setup.cfg

@@ -0,0 +1,6 @@
+[flake8]
+max-line-length = 88
+exclude = .git/,venv/
+
+[tool:pytest]
+python_files = *.py