Adding the erb for app_config, note that before this file was in .gitignore, but now

environmental variables are being utilized.

config/app_config.yml

@@ -1,11 +1,11 @@
 default: &default
-  smtp_address: ENV['SMTP_ADDRESS']
-  smtp_domain: ENV['SMTP_DOMAIN']
-  smtp_port: ENV['SMTP_PORT']
-  smtp_user_name: ENV['SMTP_USER_NAME'] 
-  smtp_password: ENV['SMTP_PASSWORD'] 
-  smtp_ssl: ENV['SMTP_SSL']
-  default_url: ENV['DEFAULT_URL']
+  smtp_address: <%= ENV['SMTP_ADDRESS'] %>
+  smtp_domain: <%= ENV['SMTP_DOMAIN'] %>
+  smtp_port: <%= ENV['SMTP_PORT'] %>
+  smtp_user_name: <%= ENV['SMTP_USER_NAME'] %>
+  smtp_password: <%= ENV['SMTP_PASSWORD'] %>
+  smtp_ssl: <%= ENV['SMTP_SSL'] %>
+  default_url: <%= ENV['DEFAULT_URL'] %>
 
 development:
   <<: *default