Update CHANGELOG

Author: ivoanjo

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 * [#122](https://github.com/codegram/hyperclient/pull/122): Improve error message when server returns invalid data - [@ivoanjo](https://github.com/ivoanjo).
 * [#125](https://github.com/codegram/hyperclient/pull/125): Add table of contents to readme and add note asking users to add their projects to the wiki - [@ivoanjo](https://github.com/ivoanjo).
+* [#127](https://github.com/codegram/hyperclient/pull/127): Minor fixes: Fix warnings, and pry-byebug to dev Gemfile and tweak rubocop execution - [@ivoanjo](https://github.com/ivoanjo).
 * Your contribution here.
 
 ### 0.8.5 (July 5, 2017)