According to this video importing a psd from Photoshop CC to Reflow is as simple as going to the menu File > Generate and clic Edge Reflow Project.
But this menu item is not showing in my case.
I'm using a Mac OSX 10.8.5, the 30 days trial of creative cloud for the moment with both Reflow and Photoshop CC installed and up to date. I also have Photoshop CS6 installed on my Mac.
Best Answer
In the case of exporting Edge Reflow projects, if you are not able to see a menu option for:
Please check that you have the folder:
If you do not have this directory, uninstall and reinstall Edge Reflow.
The Edge Reflow installer should automatically install the plug-in for you.