Issue close #6

(-logs) added
--continue implemented
Issue close #19, close #18

+ added to choose the extension of the file
problem with "frozen" solved

recoverImages.rb:32:in `initialize': can't modify frozen String (RuntimeError)
	from recoverImages.rb:342:in `new'
	from recoverImages.rb:342:in `<main>'
nothing important changed (just order)
buged fixed

:D
bugs fixed
Merge pull request #25 from jesusriles/CLA

ready to be used