Add 20 minute timeout for right_api_client calls.
Merge pull request #11 from rightscale-cookbooks/st_14_11_acu180228_api_timeout

Add 20 minute timeout for right_api_client calls.
Don't set open_timeout.
Merge pull request #12 from rightscale-cookbooks/st_14_11_acu180228_api_timeout

Don't set open_timeout.
Bump version to 1.1.4.
Add Slack integration for Travis CI.
Clean up Gemfile restrictions to match other repos.
Code appendectomy: remove vestigial get_volume_type_href method and specs.
Merge pull request #13 from rightscale-cookbooks/st_14_13_volume_type_input_also_gp2

St 14 13 volume type input also gp2
Bump version to 1.1.5.
Remove Cloudstack root volume from list of attached volumes to backup.
Bump version to 1.1.6.
Update CHANGELOG.md for 1.1.6 release.