I'm pretty sure this PPA is working on it, however the description says not to use it because it's a work in progress, but it's at least worth watching to see how far it gets.
If anyone else knows of another way, like a way to manually create quicklists for it, please do tell.
UPDATE: I found a solution, it's not "automatic" so to speak, but I found a way to manually and easily add quicklists for bookmarks and places. Menulibre supports creating Unity quicklists.
To install Menulibre first open a terminal,
Ctrl+Alt+T, then enter the following commands:
sudo apt-add-repository ppa:menulibre-dev/devel
sudo apt-get update
sudo apt-get install menulibre
Now when you launch Menulibre, look for the Nemo launcher (it'll be titled 'Home Folder', so doing a search for 'nemo' will not work), you'll notice when editing a launcher in Menulibre there's a tab for 'Quicklists', click on it and add your items. For the commands, here's an example, to make a quicklist for 'Documents' just type
nemo Documents, the working directory for the commands is your home directory, so just typing the name of the folder after 'nemo' is enough.
I hope this helps.