DecodeJSONConfig reads from reader and decode the config into *conf.Config syntax error could be detected.

DecodeTOMLConfig reads from reader and decode the config into *conf.Config using github.com/pelletier/go-toml and map to convert toml to json.

DecodeYAMLConfig reads from reader and decode the config into *conf.Config using github.com/ghodss/yaml to convert yaml to json.