add admin boolean to users migration
create admin user in factory for user
add before filter to check for admin status before certain controller actions for businesses
refactor check admin method
describe block for administrator access
include devise testhelpers in config
before block to sign in user admin for administrator access
add test for GET #new for user access
add test for GET #edit for user access
change description for GET #new test
tests for POST #create for user
tests for PATCH #update for regular user
change description of require admin login
tests for DELETE #destroy for regular user
add admin user login to business features test
tests for guest access
test for add a new business under user
add test for edit a business under user
add test for delete a business under user
add tests to business features for guest access