Run flake8 on CI

.travis.yml

@@ -33,12 +33,15 @@ install:
   # Install the package and dependencies.
   - pip install -e .
 
-# command to run tests, e.g. python setup.py test
 script:
+  # Run our test suite and report coverage.
   - coverage erase
   - coverage run --source . setup.py test
   - coverage report -m
 
+  # Do some basic linting of the code.
+  - flake8 .
+
 # Report coverage
 after_success:
   - source activate root

environment_ci.yml

@@ -9,6 +9,7 @@ dependencies:
   - coverage==4.0.3
   - python-coveralls==2.7.0
   - pytest==3.0.5
+  - flake8==3.2.1
   - dask==0.13.0
   - numpy==1.11.3
   - scipy==0.19.1