Add DataHandler.update
Implement rc.py
Add document
Revise description: s/name/path/
Raise DataProcessorError when configure file does not exist
Omit get_*_dir (will be included into dpstart PR)
Update document.
Merge pull request #114 from termoshtt/show_pipes

Show pipes
Add document.
Update docstring.
Update documents
Update document.
Merge pull request #116.
Merge branch 'master' into develop

Conflicts:
	lib/dataprocessor/io.py
	lib/dataprocessor/pipes/show.py
	lib/dataprocessor/rc.py