Moved the matchers into the lib directory

lib/paperclip/matchers.rb

+require 'paperclip/matchers/have_attached_file_matcher'
+require 'paperclip/matchers/validate_attachment_presence_matcher'
+require 'paperclip/matchers/validate_attachment_content_type_matcher'
+require 'paperclip/matchers/validate_attachment_size_matcher'

shoulda_macros/matchers.rb

-require 'shoulda_macros/matchers/have_attached_file_matcher'
-require 'shoulda_macros/matchers/validate_attachment_presence_matcher'
-require 'shoulda_macros/matchers/validate_attachment_content_type_matcher'
-require 'shoulda_macros/matchers/validate_attachment_size_matcher'

shoulda_macros/paperclip.rb

-require 'shoulda_macros/matchers'
+require 'paperclip/matchers'
 
 module Paperclip
   # =Paperclip Shoulda Macros