push for heroku
run rake assets:precompile
run rake assets:precompile
change some gemfile
change some gemfile
change some gemfile
change some gemfile
change some gemfile
change some gemfile
add some gem
use sendgrid to send mail
change and try to make it work
change and try to make it work
change and try to make it work
change and try to make it work
finally work on heroku