Update ngrok documentation for improvmx (#254)

* Update ngrok documentation for improvmx

* Add placeholder to env example

* Fix readme

* Fix readme

* Clarify readme

.env.example

@@ -9,3 +9,5 @@ POSTGRES_USER=alpha_amber_<env>
 POSTGRES_PASSWORD=<password>
 
 HOST=csvalpha.nl
+
+NGROK_HOST=<subdomain>.ngrok.io

.gitignore

@@ -29,3 +29,6 @@
 
 # Ignore master key for decrypting credentials and more.
 /config/master.key
+
+# Ignore activestorage files
+/storage

README.md

@@ -63,14 +63,14 @@ $ EDITOR="subl --wait" bundle exec rails credentials:edit
 $ EDITOR="code --wait" bundle exec rails credentials:edit
 ```
 
-## Run mailgun locally
-To test the mailgun endpoint you can setup mailgun to forward mail to your local machine. To do this you should follow the following steps.
+## Run ImprovMX locally
+To test the ImprovMX endpoint you can setup ImprovMX to forward mail to your local machine. To do this you should follow the following steps.
 
 1. Install [ngrok](https://ngrok.com/download)
 2. Run ngrok with `./ngrok http 3000`
-3. Add a mailgun catch-all route with as action 'store and notify' to `ngrok-address`/mailgun
-4. Get the [mailgun API key](https://app.mailgun.com/app/domains/csvalpha.nl)
-5. Start the rails server `MAILGUN_API_KEY='key_here' bundle exec rails s`
+3. Add an ImprovMX email address that forwards to `https://actionmailbox:<action_mailbox-ingress-password>@<ngrok-address>/rails/action_mailbox/improvmx/inbound_emails`
+4. Add the `NGROK_HOST` to your `.env` file
+5. Start the rails server
 
 
 ## Run specs (tests)

config/environments/development.rb

@@ -57,6 +57,9 @@
   # Refer the Ember/UI of the Alpha website
   config.action_mailer.default_url_options = { scheme: 'http', host: 'localhost', port: 4200 }
 
+  # Allow access to the api via ngrok
+  config.hosts << ENV['NGROK_HOST'] if ENV['NGROK_HOST']
+
   # Run Sidekiq inline
   require 'sidekiq/testing'
   Sidekiq::Testing.inline!