Fix comments and code formatting for channels and broadcast

bindings/channels.go

broadcast/client.go

broadcast/interface.go

broadcast/method.go

broadcast/processor.go

broadcast/rsaToPublic.go

broadcast/rsaToPublic_test.go

broadcast/symmetric.go

channels/README.md

channels/adminListener.go

channels/adminListener_test.go

channels/channelMessages.pb.go

channels/channelMessages.proto

channels/dummyNameServer.go

channels/emoji.go

channels/errors.go

channels/eventModel.go

channels/eventModel_test.go

channels/identityStore_test.go

channels/interface.go