def extract_pair(line)
      key, value = line.split("=", 2)
      [key.tr("-", "_").to_sym, value.gsub(/[\n\r]+/, "")]
    end
def extract_pair(line)
      key, value = line.split("=", 2)
      [key.tr("-", "_").to_sym, value.gsub(/[\n\r]+/, "")]
    end
Returns a the option name as a symbol and its string value sans newlines.

 @param line [String] unparsed line from config file
 @return [Array<Symbol, String>]