language: python
python:
  - '3.6'
  - nightly
install:
  - pip install .
before_script:
  - "ls -R"
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - sleep 3 # give xvfb some time to start
script:
  - py.test

language: python
python:
  - '3.6'
install:
  - pip install .
before_script:
  - "ls -R"
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - sleep 3 # give xvfb some time to start
script:
  - py.test

Disable testing on the nightly python.
Disable testing on the nightly python.

It seems like the nighly build has some instabilities, and I don't want
to get failures that aren't due to my code.  I'll just have to remember
to update the Travis config when python3.7 comes out
