Check status of pebble connection when first enabled and toggle to last used ring mode.

I grabbed this app soon after I first put on my Pebble. I was a bit confused at first because I clicked "Enable" and nothing happened. My phone didn't go silent until I toggled the connection with my pebble. That's now fixed, I also leave my phone in vibrate mode and was surprised when a pebble disconnect would cause the audible ringer to be enabled. It will now restore the original ringer mode, which also means if you deliberately put your phone in silent mode (e.g.  on a plane, in a movie theatre, giving a presentation, etc.) a pebble disconnect won't force the ringer back on. Hope you like the changes!