docs(data-loader): options in data-loader's readme (#654)
docs(data-loader): options in data-loader's readme (#654)

* docs: options in data-loader's readme

* docs: add some default values to options

* fix: Apply suggestions from code review

Co-authored-by: piyo <5df77a77f51243bee44e3e6ed6e5ca8df44390a1@gmail.com>

Co-authored-by: piyo <5df77a77f51243bee44e3e6ed6e5ca8df44390a1@gmail.com>
kintone/cli-kintone,kintone/cli-kintone