Refactoring tests

Improvements to test of Action class.
Added new class method to reduce duplicate code and simpify testing.

Cleanup dead code

Merge pull request #84 from codelabsab/remove_unused_code

Remove unused valid_actions

Provide feedback when unsupported action

Merge pull request #83 from codelabsab/fix_response_unsupported_action

Add feedback when performing unsupported action

Add basic test for `Action` class.

Also some cleanup and update to README

Refactor app.py for /command endpoint

1.1.0

Use correct index for date

Only deploy to prod when tag

1.0.3

Add missing dependency

Fix travis deployments

1.0.2

Fix condition in travis

Refactoring

Refactoring app.py and travis deployment