I can’t do that because i haven’t “featured slider” in “customize”. 
Look my code in “catchresponsive-featured-slider.php” : 
function catchresponsive_demo_slider( $options ) {
	$catchresponsive_demo_slider =’
								<article class=”post hentry slides demo-image displayblock”>
									<figure class=”slider-image”>
										
											
										
									</figure>
									<div class=”entry-container”>
										<header class=”entry-header”>
											<h1 class=”entry-title”>
												<span></span>
											</h1>
										</header>
										<div class=”entry-content”>
											<p></p>
										</div>
									</div>
								</article><!– .slides –> 	
								<article class=”post hentry slides demo-image displaynone”>
									<figure class=”Slider Image 2″>
										
											
										
									</figure>
									<div class=”entry-container”>
										<header class=”entry-header”>
											<h1 class=”entry-title”>
												<span></span>
											</h1>
										</header>
										<div class=”entry-content”>
											<p></p>
										</div>
									</div>
								</article><!– .slides –> ‘;
	return $catchresponsive_demo_slider;
}
endif; // catchresponsive_demo_slider
Can i add a new code to add a new slider ? 
Thanks for your answer