Activate sleeping features of wordpress themes

add-theme-support.php

<?php 

//turn on tumblr-style post formats 
add_theme_support('post-formats', array('image', 'video', 'audio', 'quote', 'gallery'));

//adds ability to have one featured image per post or page
add_theme_support('post-thumbnails'); 

//more robust feed links on every page
add_theme_support('automatic-feed-links');

//adds CSS to the admin text editor. create a CSS file in your theme called editor-style.css
add_editor_style();

//turn on background image uploader
add_theme_support('custom-background');

//turn on custom header uploader
$defaults = array(
  'width' => 960,
	'height' => 150
);
add_theme_support('custom-header', $defaults)

//add more image sizes
//(name, width, height, crop?)
add_image_size('awesome-tiny', 90, 90, true );
add_image_size('awesome-banner', 960, 150, true);
add_image_size('awesome-frontpage', 960, 330, true);