Mime Type for CSV files missing

[billgeek]

Prerequisites

• [X] I have written a descriptive issue title
• [X] I have verified that I am running the latest version of Nancy
• [X] I have verified if the problem exist in both DEBUG and RELEASE mode
• [X] I have searched open and closed issues to ensure it has not already been reported

Description

MimeTypes.GetMimeType("filename.csv") returns application/octet-stream which is not correct according to the RFC 7111. It should be text/csv.

Steps to Reproduce

• Create any project
• Get the mime type for a CSV file
• Observe issue

System Configuration

Any environment

• Nancy version:
• Nancy host
  • [ ] Nancy.Hosting.Aspnet
  • [X] Nancy.Hosting.Self
  • [ ] Nancy.Owin
  • [ ] Other:
• Other Nancy packages and versions:
• Environment (Operating system, version and so on):
• .NET Framework version:
• Additional information: the workaround at the moment is to register the correct mime type on application startup. (MimeTypes.AddType("csv", "text/csv");)

The source file (Nancy\src\Nancy\MimeTypes.cs) does not include an entry for CSV files.