Change 'certifiedDeliveries' to 'carbonCopies'
Switch to using local documents instead of templates

This is to avoid the hassle of setting up a template in DS.
Replace 'restler' with 'request'
Accept the host name no matter what case it is
Generate host notification PDF within the app

...instead of having the DS API do it for us.

This should cut down on wait time.
Merge branch 'optimize' of https://github.com/docusign/Lobby-App into optimize

Conflicts:
	app.js
	package.json
Add note about software used during development
Merge branch 'optimize' into develop
Merge branch 'master' into develop
Remove use of 'clientUserId' field

This is no longer required for the DS API.
Lowercase 'content-type' header for request module

From looking at the source code of the Node request module, for the
multipart request to work, the header must contain exactly 'content-type',
not 'Content-Type', in order for the request to proceed.