The syntax for the
nsm watch dir (content-extension) (template-path) (output-extension) nsm watch dir (content-extension) (template-path) (output-extension)
When a build is run, any new files in a watched directory with the specified content extension will be tracked and built, and any files where the content file has been removed will be untracked.
Note: you can watch the same directory multiple times with different content extensions, and subdirectories are not included you must watch them separately.
nift watch content nsm watch content/blog/posts ".md"