Refactor the class Collector
Refactor the class Collector

InsensitiveLoad::Collector::Base
----

- Relabel the label 'setter' to 'add @items'
- Relabel the label 'make item array' to 'make something'
- Remove the label 'initialize by string'.
- Add the label 'check'.
  - Include #check_item.
  - Include #check_path_source.
- Add the label 'validate'.
  - Include #validate_item.
  - Include #validate_path_source.
- Add the label 'set something'.
  - Include #set_options.

indeep-xyz/ruby-insensitive-search,indeep-xyz/ruby-insensitive-search