Adding classes for inline radio buttons (#27)

* Adding classes for inline radio buttons

I added new classes, to be able to style each attribute, and make some radio buttons inline.

Thank you.

* Update variable.php

templates/single-product/add-to-cart/variable.php

@@ -43,7 +43,7 @@ function print_attribute_radio( $checked_value, $value, $label, $name ) {
 		<table class="variations" cellspacing="0">
 			<tbody>
 				<?php foreach ( $attributes as $name => $options ) : ?>
-					<tr>
+					<tr class="attribute-<?php echo sanitize_title($name); ?>">
 						<td class="label"><label for="<?php echo sanitize_title( $name ); ?>"><?php echo wc_attribute_label( $name ); ?></label></td>
 						<?php
 						$sanitized_name = sanitize_title( $name );