Resolve issues with readme file being committed (#7)

* use braces for the git add to support a glob-based readme filename

* bail if nothing was changed

Author: jazzsequence

bin/validate-plugin-version.sh

@@ -76,14 +76,19 @@ main() {
 	git config user.name "github-actions"
 	git config user.email "[email protected]"
 	git checkout -b "$BRANCH_NAME"
-	git add "${PLUGIN_PATH}/readme.txt" "${PLUGIN_PATH}/README.md" || true
+	git add "${PLUGIN_PATH}/"{readme,README}.* || true
 
 	# Bail before committing anything if we're dry-running.
 	if [[ "${DRY_RUN}" == "true" ]]; then
 		echo "Dry run enabled. Happy testing."
 		exit 0
 	fi
 
+	if [[ -z $(git status --porcelain) ]]; then
+		echo "No changes to commit. Exiting."
+		exit 1
+	fi
+
 	echo "Committing changes and pushing to the repository."
 	git commit -m "Update Tested Up To version to $CURRENT_WP_VERSION"
 	git push origin "$BRANCH_NAME"