Updating the README to callout interim solution in test-helper.js#423

cah-john-ryan wants to merge 1 commit intoember-cli-code-coverage:masterember-cli-code-coverage/ember-cli-code-coverage:masterfrom

cah-john-ryan:update-readmecah-john-ryan/ember-cli-code-coverage:update-readmeCopy head branch name to clipboard