language: python
python:
  - "3.6"
  - "3.6-dev"
  - "3.7"
  - "3.7-dev"
  - "3.8-dev"
  - "nightly"
script:
  - python tests.py
  - mypy parsenvy/parsenvy.py

language: python
python:
  - "3.6"
  - "3.6-dev"
  - "3.7"
  - "3.7-dev"
  - "3.8-dev"
  - "nightly"
install:
  - pip install pipenv
  - pipenv install
script:
  - python tests.py
  - mypy parsenvy/parsenvy.py

Add install steps for Travis
Add install steps for Travis
