def add_to_base(file)
      occurence = file.scan(/(\s+mount\s.*?\n)/).last.first
      replacement = occurence + mount_point
      file.sub!(occurence, replacement)
    end
def add_to_base(file)
      occurence = file.scan(/(\s+mount\s.*?\n)/).last.first
      replacement = occurence + mount_point
      file.sub!(occurence, replacement)
    end
adding mount point to base class