docs: add 1.5.0 to CHANGELOG

Author: TomAFrench

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.5.0] - 2020-09-xx
+
+### Added
+
+- Add simple integration of web3Modal to React templates, as per [pull request #63](https://github.com/PaulRBerg/create-eth-app/pull/63)
+
 ## [1.4.1] - 2020-09-03
 
 ### Fixed