perform continuous data integration

[Stephen-Gates]

Automate tests to run every time the data or schemas change.
See:

• http://frictionlessdata.io/guides/validating-data/#continuous-data-integration
• http://okfnlabs.org/blog/2016/05/17/automated-data-validation.html
• http://okfnlabs.org/blog/2016/07/13/continuous-processing-with-data-packages.html

[Stephen-Gates]

• fix path to local data in datapackage
• copy scripts
• copy yml
• sign up to travis
• include badge and doco on readme
• test
  • test with valid data
  • test with invalid data^

^ test invalid data by creating one or more datapackages that point to the test data and adjust the script to use this datapackage instead of the one at the root directory.