webpack-cli should be added as devDependency

sokra · web-flow · commit 272a632ea7d3 · 2017-12-13T15:05:12.000+01:00
diff --git a/bin/webpack.js b/bin/webpack.js
@@ -13,7 +13,7 @@ if(webpackCliInstalled) {
 } else {
 	console.error("The CLI moved into a separate package: webpack-cli.");
 	console.error("Please install 'webpack-cli' in addition to webpack itself to use the CLI.");
-	console.error("-> When using npm: npm install webpack-cli");
-	console.error("-> When using yarn: yarn add webpack-cli");
+	console.error("-> When using npm: npm install webpack-cli -D");
+	console.error("-> When using yarn: yarn add webpack-cli -D");
 	process.exitCode = 1;
 }
