Strip comments from lines earlier in zone reader.
Prevents failure when line contains whitespace before comment.
Merge pull request #51 from tg90nor/strip-comments-early-in-reader

Strip comments from lines earlier in zone reader.
Add sudo: false configuration for faster build on Travis CI

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/
Fixed instance variable array subtraction.
Add unit test for RR hash fix.
Merge pull request #52 from otahi/improve_travis_ci

Add sudo: false configuration for faster build on Travis CI
Merge pull request #53 from keithrbennett/fix_rr_hash

Fixed instance variable array subtraction.