
example 
  interactive replace with showing each difference
    script/rename model (OldModel) (NewModel) -c -S

  interactive replace with showing each difference (by using 'diff' command)
    script/rename model (OldModel) (NewModel) -c -S -d

  no confirmation for overwrite
    script/rename model (OldModel) (NewModel) -c -f 

  no confirmation for overwrite without svn
    script/rename model (OldModel) (NewModel) -f 

  check differences only (don't make any change)
    script/rename model (OldModel) (NewModel) -c -f -p -S -d > rename_files.txt
    

  If you want to customize renaming file and replacings, generate config/rename.rb
    script/rename model -g
