Limit Wearable timeout

Fixes #122 by
1) Doing a check on API level before attempting to connect to the Wearable API (as Wearable API is not available prior to Android 4.3 / Jelly Bean MR2 so no need to attempt to connect)
2) Limiting the timeout to 5 seconds to reduce any delay even on 4.3+ devices.
Merge pull request #123 from ianhanniballake/wearable_timeout

Limit Wearable timeout