Added a Rakefile and tasks for running rspec tests and cucumber tests
had to add a 1 second pause between the step that creates a new file and the step that is checking for it because it was failing sometimes.  This is not ideal and I need to come back and actually fix this
add diff-lcs to Gemfile and cucumber includes to the Rakefile
dont want to track the coverage directory
update
moved the file as it was  typo and not working
added a replace mode that takes text or patterns and added more testing for the Copier class as well as refactoring the classes so that I no longer needed the BakFile cloass and removed it
removed old bakfile.rb that i refactored away
added tests for regular expression replacement both with and without backslash characters
added regex branch for pattern/text replacement in filenames