FinePrint 401 error for API's
Changed API errors to status code + custom JSON object
Refined custom error object
Merge pull request #5 from Dantemss/fine_print_error_for_apis

FinePrint 401 error for API's
update location of tutor-js
Merge pull request #6 from openstax/update-tutor-js

update location of tutor-js
Updated FinePrint version and contract API errors
Minor error message fix
Ruby version update
Merge pull request #7 from Dantemss/master

Updated FinePrint version and contract API errors
Merge branch 'master' of github.com:openstax/tutor into tasks-1