ci: Add travis ci script, and configure flake8

Author: roykuper13

.travis.yml

@@ -0,0 +1,10 @@
+language: python
+python:
+  - "3.5"
+  - "pypy3"
+install:
+  - pip install flake8
+  - pip install -r requirements.txt
+script:
+  - flake8 src/
+  - sudo -E env "PATH=$PATH" pytest tests/* -v

setup.cfg

@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 100