Remove the pointless prompt
Merge pull request #64 from zendesk/pochen/remove_annoying_prompt

APPS-1419 Remove the pointless prompt
v1.19.0
Merge branch 'master' into olaf/yaml_settings
No spaces after ( or before )
I extended the read_from_yaml function a bit to make it fail if you haven't specified a setting in your yaml file but it is required (and then is no default).
tests for get_settings_yaml