Modify spec in Collector
Modify spec in Collector

InsensitiveLoad::Collector
----

- Modify a shared context.
  - Relabel to 'relative path in the sample file structure' from 'at root of the sample file structure'.
  - Contain the definition of relative path.
- Modify the relative sections of #items, #dirs, #files.
  - Remove the path written directly on these sections.
  - Relabel the shared context.

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