Update CHANGELOG.md with changes to be reviewed on next call to create new release

CHANGELOG.md

+Copyright (C) 2020 IEEE SA OSCom, peer-review ad-hoc subcommittee un der the terms of the [Apache Licence Version 2](https://opensource.ieee.org/community/peer-review/admin/-/blob/master/LICENSE).
+
+Contributing to IEEE SA OSCom open-source peer-review ad-hoc sub-committee project
+===
+
+###### Attribution
+this file is based on the [Keep a Changelog](http://keepachangelog.com/) file under an MIT License.
+
 # Change Log
 All notable changes to this project will be documented in this file. Including: Recommended groupings for changes include: 
 ```diff
 + Added + Changed + Deprecated + Removed + Fixed + Security +
 ```
 
-The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## [Unreleased]
 ### Added
 
-### Changed
+### Changed 2020-June-24
+Updated [CONTRIBUTING.md](https://opensource.ieee.org/community/peer-review/admin/-/blob/master/CONTRIBUTING.md) file. It includes a section on governance and decision making ([Issue #14](https://opensource.ieee.org/community/peer-review/admin/-/issues/14)). 
+
+### Deleted 2020-June-24
+Removed [Call for participation draft](https://opensource.ieee.org/oscom/peer-review/-/blob/master/Call-for-Participation.md) file and re-directed links to the [Wiki](https://opensource.ieee.org/community/peer-review/admin/-/wikis/home) page isntead.
 
 ## [0.0.1] 2020-May-21
 ### Added