Fixes to accommodate for before_app_first_request method deprecation#61

FranciscoDA wants to merge 2 commits intokarec:masterkarec/cookiecutter-flask-restful:masterfrom

FranciscoDA:fix-before_app_first_request-deprecationFranciscoDA/cookiecutter-flask-restful:fix-before_app_first_request-deprecationCopy head branch name to clipboard