add comparer
fix parser test
Merge branch 'feature/add-comparer' into develop

* feature/add-comparer:
  fix parser test
  add comparer
add searcher
refactored searcher
replace rspec with minitest
fix parsing string
refactored comparer
refactor searched
added sweep
Merge branch 'feature/add-searching-require-in-files' into develop

* feature/add-searching-require-in-files:
  added sweep
  refactor searched
  refactored comparer
  fix parsing string
  replace rspec with minitest