Implementing post-Format

Hope someone can help me. I am trying to implement post-format in the theme I am developing but having problems getting the
formats to display. After reading all the articles I could find and the codex, I came up with the following code in the index.php
I also add the code for theme support in function.php.

Whenever I apply the format to a post from the admin it does not display the format. It looks like it’s all falling back to
content.php. Not really sure what I am doing wrong or missing out. This is my first attempt developing a theme from scratch,
I know I have alot to learn along the way. Any help will be greatly appreciated.

I have my template files as:
content.php
content-aside.php
content-quote.php

Post format in function.php
===============================

add_theme_support( 'post-formats', array( 'aside', 'chat', 'gallery', 'image', 'link', 'quote', 'status', 'video', 'audio' ) );?>

Code from index.php
==========================

<?php while ( have_posts() ) : the_post(); ?>

<!-- get template part for post format -->

<?php
if (has_post_format('standard')) {
	get_template_part('content');
}

elseif (has_post_format('aside')) {
	$format = get_post_format('aside');
	get_template_part('content', $format);
}

elseif (has_post_format('quote')) {
	$format = get_post_format('quote');
	get_template_part('content', $format);
}

else{
	get_template_part('content');

}

?>
<?php endwhile; ?>