If no arguments specified use stdin and stdout.
Merge pull request #2 from rohitn/stdin_fix

If no arguments specified use stdin and stdout.
Add formatting for INSERT with column list
Add support for many statements
Treat commas differnetly in different kinds of clauses

Commas in SELECT, ORDER BY, GROUP BY now can be configured differently
Add fommating for comma separated table list
Add formatting for UPDATE statements
Remake create_config_file(..)

Parametrise it and make resulting files depend on default configuration (instead of hardcoded result)
Fix how config file creation is done

It can be done only as separate action now (can not format)
If conf file is not available it will not be created (just default conf is used, but not written to file)