added flake8 to travis

Author: dantownsend

.travis.yml

@@ -20,6 +20,7 @@ before_script:
   - psql -c "GRANT ALL PRIVILEGES ON DATABASE piccolo TO piccolo;" -U postgres
   - psql -c "CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";" -d piccolo -U postgres
 script:
+  - flake8 piccolo
   - cd tests && ./travis.sh
 after_success:
   - cd .. && coveralls