Demonstrate 'event to mail' flow using a script

• An event happens
• Event handler receives event {"type":"thing-created", "uri": "http://things.net/xyz"}
• Event handler writes a glue script to perform the following operations
• Get a list of subscriber email addresses for the entity referred to by the uri
  • GET http://subscriber-service/?entity=http://things.net/xyz
• Get the data from the uri of the entity
  • GET http://things.net/xyz
• Render entity data
  • POST http://render-service/thing/created -d $data
• Convert rendered HTML to "email friendly HTML"
  • POST http://inline-styles-service/ -d $html
• Generate mail for each subscriber email address
  • POST http://mail-gen-service/ -d $html $address $from
• Spool each mail
  • POST http://mail-service/spool -d mail-body