How to reduce excerpt Length and remove dots with Readmore link in Wordpress

1.Go to your functions.php file
and paste following code.

<?php
function change_excerpt_length($length) {
    return 10;
}
add_filter('excerpt_length', 'change_excerpt_length');

function new_excerpt_more( $more ) {
    return ' <a class="read-more" href="'. get_permalink( get_the_ID() ) . '">' . __('Read More', 'http://your_domain/') . '</a>';
}
add_filter('excerpt_more', 'new_excerpt_more');

?>

Thanks