def write
      file = FileWriter.new(@path)
      encryptor = Encryptor.new(password: @password, file: file)
      encryptor.encrypt(@plaintext)
      file.write
    end
def write
      file = FileWriter.new(@path)
      encryptor = Encryptor.new(password: @password, file: file)
      encryptor.encrypt(@plaintext)
      file.write
    end
Write the plaintext to the file specified

 @return [File] The closed file handle the vault was written to