initial commit: rails app
add heroku gem
setting ruby 2.0.0 for heroku
config db for development
add a welcome page to index
data model to store sendgrid events
delete welcome controller create events controller to handle events post from sendgrid
add doc about events
receive event request in api.json
create a index page
use puma as server and sidekiq in background tasks
record events from sendgrid
Fix config for Puma