Fixes#221
```
Test Suite 'SocketIO-tvOSTests.xctest' passed at 2015-10-22 17:21:34.436.
Executed 56 tests, with 0 failures (0 unexpected) in 0.817 (0.867) seconds
Test Suite 'All tests' passed at 2015-10-22 17:21:34.437.
Executed 56 tests, with 0 failures (0 unexpected) in 0.817 (0.868) seconds
````
## Changes:
- Duplicated target for both framework and tests.
- Set the right platform on new targets.
- Changed `tvOS` framework target product name to `SocketIO`.
- Changed targets `plist`s to use the existing ones, and removed the copies.
- Configured scheme to use the right test target.
- Shared scheme.
- Verified `tvOS` tests pass.
