This PR introduces solution for #333 - it adds support for array JSON-RPC payload.
unmarshalMessage tries to unmarshal JSON paylod into *jsonrpcMessage object, and in case of failure, analyzes error and, if it's unmarshalling array error, tries to unmarshal it as an array.
Updates and adds some package docs.
It also provides autogenerated README's using https://github.com/jimmyfrasche/autoreadme tool. To use it, make sure it's installed on your system, and every time you update documentation, run go generate to update the README.md file.
This PR refactors RPC subsystem for status-go:
cleans up two different RPC client implementations (RPCManager and rpc.Client)
creates new package under geth/rpc
moves routing logic into this package (rpc.(*router))
add tests for routing
cleans up NodeManager
Ivan Daniluk