Request: POST
Signature: /api/v1/uploaddoc
Uploads a document. The API expects Form Data in the body.
"Ref" can be any one of the following: Activity, Asset, Bill, Invoice, Location, Quotation, Receipt, User, YardMove (the names are not case sensitive)
"RefID" refers to the ID of the parent (Bill ID, Invoice ID, etc.)
"File" must contain the file to be uploaded
"Title" is the document title. It is optional. If not specified, the title is taken from the file name.
The token must be passed as a Header in the request