Install Appcelerator Studio to the Mac.

At first, download this node version and install it in your machine.

•  https://platform.appcelerator.com/#/product/cli

Make sure you are using  JDK - 8

• http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

Then install the CLI via the terminal

sudo npm install -g appcelerator

appc use latest

appc setup

appc login 

Now take a fresh copy of Appcelerator Studio and install it in your machine. It will automatically install all other prerequisite software.

•  https://web.appcelerator.com/product/studio

Hope this helps.