config.list.merge       Merge list file (From config package),
                        list.right will overwrite the element also
                        existed in list.left
configr                 configr package implements the YAML parser,
                        JSON parser and INI parser for R setting and
                        writing of configuration file.
eval.config             Read from the currently active configuration
                        (JSON/INI/YAML be supported), 'retreiving
                        either a single named value or all values as a
                        config obj which have 'config', 'configtype',
                        'file' 'property.
eval.config.groups      Get config file parameter groups
eval.config.merge       Merge config parameter sets by groups.
get.config.type         Get config file type retreiving json/ini/yaml
                        or FALSE
is.ini.file             Function to check wheather file is ini format
is.json.file            Function to check wheather file is json format
is.yaml.file            Function to check wheather file is YAML format
read.config             Read from the file (JSON/INI/YAML be
                        supported), retreiving all values as a list.
write.config            Write config in a file (JSON/YAML/INI)
