[Travis] Refactor for CI integration (#16)

* black reformat, updated git ignore for a python project, fixed imports and linter warnings

* [Travis] Add Travis CI (#17)

Author: ayushr2

.gitignore

@@ -1 +1,113 @@
-*.pyc
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+.idea/

.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",