Keyboard Shortcuts for "Compress" or "New Folder with Selection"?
For compressing i found simple solution.
I'm using OS X Yosemite 10.10.2 and It's worked for me.

Open system preferences and follow the screenshots:

--> Step1:


--> Step2:


--> Step3:


--> Step4(It's Done):


That's It.

I know it's been long time since you asked the Question but i'm posting the answers for those who are still looking for solution.