Rule did fail on  ARGUMENT list
Fix: rules splitting regexp.
- \t caused continuation, even if not at start
- fix of comment parsing.
Fixes https://github.com/hafriedlander/php-peg/issues/29
Merge pull request #28 from uwetews/master

Rule did fail on  ARGUMENT list
Merge pull request #30 from peter-kolenic/rule_splitting_regexps_fix

Fix: rules splitting regexp.