Merge pull request #20 from mdevaev/master

Fixed ZK tarball link
Bump version: 3.0.0 → 3.0.1
fixed tests, updated for dominator >=14
Bump version: 3.0.0 → 3.0.1
Merge pull request #21 from nikicat/master

updated to dominator >=14
allow to customize memory limit
migrated to dominator >=15.1
do not tag on version bump
Bump version: 3.0.1 → 3.1.0
removed hipchat integration for Travis-CI
updated fixtures to support docker-py 0.7.0