Add Travis support
Fix Bison 3.x incopability. Patch by Daniel Leidert <dleidert@debian.org>. Debian Bug: http://bugs.debian.org/733359
Merge pull request #227 from mwojcikowski/add-travis-testing

Add Travis support
Merge pull request #226 from mwojcikowski/fix-bison3

Fix Bison 3.x incompabtility