deploying to heroku
updated strong parameters per ben's suggestion
fixing typos
deleted cruft
trying to get strong parameters working
added padding around main page
updated user and course models
registration form working
added comments field to course registrations
registrations views and forms are working
added amount to charges#new
changed price to integer from float
finished changing price to integer in views
fixed typo - uncommented comments oops
add .env to .gitignore