Update CHANGELOG.md with details from pull request #118

CHANGELOG.md

@@ -5,6 +5,8 @@ This file is used to list changes made in each version of the habitat cookbook.
 <!-- latest_release unreleased -->
 ## Unreleased
 
+#### Merged Pull Requests
+- fix hashbang in expeditor update script [#118](https://github.com/chef-cookbooks/habitat/pull/118) ([joshbrand](https://github.com/joshbrand))
 <!-- latest_release -->
 
 ## 0.59.0 (2018-07-17)
@@ -234,4 +236,4 @@ This cookbook was updated to be compatible with the changes made in Habitat 0.26
 
 ## v0.0.3 (2016-07-14)
 
-- Initial release, includes `hab_package` and `hab_install` resources
+- Initial release, includes `hab_package` and `hab_install` resources