Update README #62
Description
The README has sections that are out of date with respect to the available functionality. The sections that need to be updated are:
- Usage instructions
- Spotbit's API is now self-documenting. This section isn't needed.
- https://github.com/BlockchainCommons/spotbit#config-options
- https://github.com/BlockchainCommons/spotbit#exchanges-used-for-averaging
- https://github.com/BlockchainCommons/spotbit#dependencies