From the new README:
Available Grunt commands
grunt dev
— Compile LESS to CSS, concatenate and validate JSgrunt watch
— Compile assets when file changes are madegrunt build
— Create minified assets that are used on non-development environments
You’re looking for grunt build
.
Also, if you don’t use Bedrock, you’ll need to add the following to your wp-config.php
on your development installation:
define('WP_ENV', 'development');