WordPress.org

1. Upload the content of the zip package to /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Configure the plugin according to your needs. If you need help you can visit the plugin page
4. Place the following snippet where you want the stars to appear (normally single.php, content-single.php or index.php):

<?php if(function_exists('ec_stars_rating')) {
    ec_stars_rating(); 
} ?>