This extensions adds a View in Marked 2 command to the Editor menu to open the current Nova document with the Marked 2 Markdown previewer.
This extension is not written or endorsed by Brett Terpstra, the creator of Marked 2.
You can set the path to the Marked 2 application in the Extension Preferences. In most cases, this will be correctly set by default, but if you have multiple versions of Marked 2 installed and wish to use a specific one, you can override the default.