--- FileUtils.mv( src, dest, *options )
  Options: noop verbose

  from  to ˰ưޤto ǥ쥯ȥʤ to/from 
  ưޤİʾΰͿȤϥǥ쥯ȥ dir 
  ˤ¾Υեưޤ

    FileUtils.mv 'badname.rb', 'goodname.rb'
    FileUtils.mv 'stuff.rb', 'lib/ruby', :force

--- FileUtils.mv( list, dir, *options )
  Options: noop verbose

  file1 file2 Ĥ dir/file1 dir/file2 Ĥ˰ưޤ
  ѡƥޤǰưȤϥԡޤ

    FileUtils.mv 'junk.txt', 'dust.txt', '/home/aamine/.trash/'
    FileUtils.mv Dir.glob('test*.rb'), 'T', :noop, :verbose

