Adopt to the case when configure file does not exist

- don't force the existence of ~/.dataprocessor.ini
- remove create_configure_file
- refactoring
Add configure creator (dpinit)
Enable piping in dpmanip
Write document for parameters of rc.ArgumentParser
Rename get_parser into get_configparser
Simply raise exception when configure file is invalid
Force the existence of configure file for dpmanip
Use SyncDataHandler also in loading node_list
Merge pull request #117 from termoshtt/dpmanip_piping

Enable piping of dpmanip