Merge pull request #498 from calabash/feature/enable-xtc-job-on-travis-ci

Enable xtc job on travis ci
Merge branch 'release-0.10.1'
Merge pull request #539 from calabash/release-0.10.2

Release 0.10.2
Merge pull request #542 from calabash/release-0.11.0

Release 0.11.0
Bump gem version to 0.11.1
Set minimum server version to 0.11.1
Add blurb to README about failing Travis CI
Add 0.11.1 changelog
Update testing resources
Merge pull request #559 from calabash/release/0.11.1

release 0.11.1
Merge branch 'master' into develop