message: CI: Install coverage on Travis.
diff: @@ -2,7 +2,7 @@ language: python
  python:
  - "3.5"
  install:
  - - "pip install -r requirements.txt"
  + - "pip install -r requirements.txt coverage"
  - "git config --global user.email mefyl@gruntech.org"
  - "git config --global user.name mefyl"
  script:
  