Added _isAssessmentAttemptComplete on course model
Move to example.json on extension root level

The presence of this file here is confusing for developers familiar with config settings from original internal Adapt
Created file from scormData.json (now deleted)
Merge branch 'feature/assessment-rewrite' of github.com:cgkineo/adapt-contrib-spoor into feature/assessment-rewrite
remove console logs and fix formatting