* WIP
* Add push notifications example
* Ignore this
* Remove prints
* Format
* remember to set this
* Make push server configurable
* remove prints
* remove comment
* format
* remove print
* remove this
* add comment
* fix lint
This PR lets us use an actual wallet as a SigningKey instead of just a private key which was what we used in #2.
It also introduces the very beginnings of an example app that will get fleshed out as we start building an actual Client.
It also also introduces some very basic swiftlint rules.