Add export account to CHANGELOG (#171)

* Add export account  to CHANGELOG

* Ran as browser

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 0.13.0-beta.x
+
+- Account export functionality (Thanks to https://github.com/Anze1m)
+
 # 0.12.1
 
 - Support for Kusama CC2

jest.config.js

@@ -2,6 +2,7 @@
 const config = require('@polkadot/dev/config/jest');
 
 module.exports = Object.assign({}, config, {
+  browser: true,
   moduleNameMapper: {
     '@polkadot/extension-(chains|dapp|inject|ui)(.*)$': '<rootDir>/packages/extension-$1/src/$2',
     '@polkadot/extension(.*)$': '<rootDir>/packages/extension/src/$1',