```ruby
# Be sure to restart your server when you modify this file.

# Add new mime types for use in respond_to blocks:
# Mime::Type.register "text/richtext", :rtf
# Mime::Type.register_alias "text/html", :iphone

Mime::Type.register_alias "text/plain", :diff
Mime::Type.register_alias "text/plain", :patch
```

Add Markdown to Mime types
user
```ruby
# Be sure to restart your server when you modify this file.

# Add new mime types for use in respond_to blocks:
# Mime::Type.register "text/richtext", :rtf
# Mime::Type.register_alias "text/html", :iphone

Mime::Type.register_alias "text/plain", :diff
Mime::Type.register_alias "text/plain", :patch
Mime::Type.register_alias 'text/html',  :markdown
Mime::Type.register_alias 'text/html',  :md
```
assistant