Added option to read from and write to files as well as console.  This allows transcode to process binary files properly - eg to Base64 an image.
Added option to read from and write to files as well as console.  This allows
transcode to process binary files properly - eg to Base64 an image.

draekko/arabica,draekko/arabica,draekko/arabica,draekko/arabica,draekko/arabica