message: have makefile explicitly install python3
diff: @@ -4,7 +4,7 @@ api: api-clean api-install api-lint api-test api-docs api-deploy api-wheel
  api-install:
  pip install -r requirements.txt
  - python setup.py install
  + python3 setup.py install
  api-test:
  nosetests --with-coverage
  @@ -19,7 +19,7 @@ api-deploy:
  cd scripts && ./doc-deploy.sh && cd ..
  api-wheel:
  - rm ../app/release-assets/*.whl; python setup.py bdist_wheel -d ../app/release-assets
  + rm ../app/release-assets/*.whl; python3 setup.py bdist_wheel -d ../app/release-assets
  ls ../app/release-assets/*.whl | xargs -I{} basename {} > ../app/release-assets/whl-name
  api-clean:
  