Enable expeditor release tasks.

Signed-off-by: Jared Quick <jquick@chef.io>

.expeditor/config.yml

@@ -0,0 +1,33 @@
+---
+rubygems:
+  - train
+  - train-core
+
+slack:
+  notify_channel: train-notify
+
+github:
+  version_tag_format: "v{{version}}"
+  minor_bump_labels:
+    - "Version: Bump Minor"
+
+merge_actions:
+  - built_in:bump_version:
+      ignore_labels:
+        - "Version: Skip Bump"
+        - "Expeditor: Skip All"
+  - bash:.expeditor/update_version.sh:
+      only_if:
+        - built_in:bump_version
+  - built_in:update_changelog:
+      ignore_labels:
+        - "Changelog: Skip Update"
+        - "Expeditor: Skip All"
+  - built_in:build_gem:
+      only_if:
+        - built_in:bump_version
+
+promote:
+  action:
+    - built_in:publish_rubygems
+    - built_in:rollover_changelog

.expeditor/update_version.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+#
+# After a PR merge, Chef Expeditor will bump the PATCH version in the VERSION file.
+# It then executes this file to update any other files/components with that new version.
+#
+
+set -evx
+
+sed -i -r "s/VERSION = '.*'/VERSION = '$(cat VERSION)'/" lib/train/version.rb
+
+# Once Expeditor finshes executing this script, it will commit the changes and push
+# the commit as a new tag corresponding to the value in the VERSION file.

CHANGELOG.md

@@ -1,3 +1,12 @@
+<!-- latest_release -->
+<!-- latest_release -->
+
+<!-- release_rollup -->
+<!-- release_rollup -->
+
+<!-- latest_stable_release -->
+<!-- latest_stable_release -->
+
 # Change Log
 
 ## [1.4.2](https://github.com/chef/train/tree/1.4.2) (2018-04-26)
@@ -762,4 +771,4 @@
 
 
 
-\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
+\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*

VERSION

@@ -0,0 +1 @@
+1.4.3