fixed notifications for <ios8
fixed notifications for <ios8
BLEBroadcaster updates

Send data in response to characteristic reads. Simple response caching
to deal with multi-packet requests.
Dont forget the value
Use ranged requests
Refactoring to allow for message data source
Hook up basic message and identity queue
Interacting with Android a bit better
Update README
GH-style identicon support
Fix link in README
Fix iOS to iOS crash
Fix notifications on iOS 7
Data receipts to prevent duplicate transmission
Slightly more reliable delivery