code: public static Reader createReaderForFile(File source, Encoding encoding)
  			throws FileNotFoundException, UnsupportedEncodingException
  	{
  		return createReaderForInputStream(new FileInputStream(source), encoding);
  	}
docs: Instanciate a Reader for a file using the given encoding.
  
  @param source
  source file.
  @param encoding
  can be <code>null</code>
  @return the reader.
  @throws FileNotFoundException
  if there is a problem to deal with.
  @throws UnsupportedEncodingException
  if there is a problem to deal with.
  @since 12.06.01