This post is more than 2 years old.
I kinda stumbled upon this by accident, but Ionic has a CDN you can find here:
To be clear, this is not recommended for normal usage, and is especially not recommended for a PhoneGap/Cordova app. But if you are creating an online demo or using something like CodePen, this can be really helpful. I used it for my "tab button calls actionsheet demo" for a StackOverflow answer from earlier in the week.