added support for AppleTV OS

[Vrixyz]

Hello,

We use your work internally in my company, and we needed to deploy automatically on tvOS, so I tweaked the code to allow that. (thanks by the way for continuing ios-deploy 🎉 )

Please consider my changes.

Some explaination about the patch :

• find_path() was not working for some paths (I believe it was "iOS DeviceSupport", probably because of the space), so I tweaked it a little bit because my tvOS support path was in this folder.
  My fix to this issue has not been to fix find_path() per se, but to make it lower level, and escape the paths before calling find_path.
• I added a deviceClassPath variable (2 to be exact, but you can read 👍 ), to adapt with tvOS location, this change is easy to read I believe.

I submit this change from home, so I can't test it with an AppleTV, and your codebase changed slightly, so maybe the patch isn't ready, but it shouldn't be far from it, as it worked on my workplace.

I would appreciate feedbacks, thanks 😄

[jakepetroules]

Awesome, qbs will enjoy this as well.

[shazron]

Reviewed and tested by deploying to an iOS device. Can't test on tvOS, so I'll leave that for users to test. LGTM. merging

[shazron]

1.9.0 published: https://github.com/phonegap/ios-deploy/releases/tag/1.9.0