Add a shortcode to the footer

schema-footer.php

// Change this

<?php if( isset( $woo_options['woo_footer_right'] ) && $woo_options['woo_footer_right'] == 'true' ) {
		        	echo stripslashes( $woo_options['woo_footer_right_text'] );
				} else { ?>
					<p class="credit"><?php _e( 'Powered by', 'woothemes' ); ?> <a href="<?php echo esc_url( 'http://www.wordpress.org' ); ?>">WordPress</a>. <?php _e( 'Designed by', 'woothemes' ); ?> <a href="<?php echo ( isset( $woo_options['woo_footer_aff_link'] ) && ! empty( $woo_options['woo_footer_aff_link'] ) ? esc_url( $woo_options['woo_footer_aff_link'] ) : esc_url( 'http://www.woothemes.com/' ) ) ?>"><img src="<?php echo esc_url( get_template_directory_uri() . '/images/woothemes.png' ); ?>" width="74" height="19" alt="Woo Themes" /></a></p>
<?php } ?>

// To this:

<?php if( isset( $woo_options['woo_footer_right'] ) && $woo_options['woo_footer_right'] == 'true' ) {
		        	echo do_shortcode('[schema]')
				} else { ?>
					<p class="credit"><?php _e( 'Powered by', 'woothemes' ); ?> <a href="<?php echo esc_url( 'http://www.wordpress.org' ); ?>">WordPress</a>. <?php _e( 'Designed by', 'woothemes' ); ?> <a href="<?php echo ( isset( $woo_options['woo_footer_aff_link'] ) && ! empty( $woo_options['woo_footer_aff_link'] ) ? esc_url( $woo_options['woo_footer_aff_link'] ) : esc_url( 'http://www.woothemes.com/' ) ) ?>"><img src="<?php echo esc_url( get_template_directory_uri() . '/images/woothemes.png' ); ?>" width="74" height="19" alt="Woo Themes" /></a></p>
<?php } ?>