Its 2017 now, time of mac book pro and Android Nought. But i guess lot of people will still look for the solution.
Download "Android File Transfer tool" from Android website and install on your mac.
Plug your Android phone, ensure that screen is not Off/in Sleep/Locked ( Go to Settings> Lock screen >sleep > extend it to longer time say 10 minutes). On plugging, android will prompt for "Use USB for" . Choose "File Transfer".
On mac, open the application "Android File Transfer tool". It will detect the connected android device and open the storage. You can transfer files from both ends.
Note: 1.You wont get android storage icon on desktop in the way you get when connecting an external storage.
2. Android website shows a message limiting transfer to 4GB. However I could transfer more without any hitch