Can't seem to get passed NULL on the screen. Not getting any JSON

<?php
/*
Plugin Name: Treehouse Badges Plugin
Plugin URI:  http://www.teamtreehouse.com
Description: Grabs Treehouse badges from user profile and displays on website.
Version:     1
Author:      Zac Gordon via Treehouse Course
Author URI:  http://www.twitter.com/zgordon
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Domain Path: /languages
Text Domain: treehouse-badge
*/

/*
 Add URL to plugin  - Assign global variabls
*/

$plugin_url = WP_PLUGIN_URL . '/wptreehouse-badges';
$options = array();



function wptreehouse_badges_menu() {


  add_options_page(
    'Official Treehouse Badges Plugin',
    'Treehouse Badges',
    'manage_options',
    'wptreehouse-badges',
    'wptreehouse_badges_options_page'
  );

}

add_action('admin_menu', 'wptreehouse_badges_menu');


/* The options page function */

function wptreehouse_badges_options_page() {

    if(!current_user_can ('manage_options') ) {
      wp_die('Sorry, you don\'t have the proper permissions!');
    }

    global $plugin_url;
    global $options;
    if(isset ($_POST['wptreehouse_form_submitted'] ) ) {

        $hidden_field = esc_html( $_POST['wptreehouse_form_submitted']);

        $wptreehouse_profile = wptreehouse_badges_get_profile ( $wptreehouse_username );


        if($hidden_field == 'Y') {

            $wptreehouse_username = esc_html($_POST['wptreehouse_username'] );

            $options['wptreehouse_username'] = $wptreehouse_username;
            $options['wptreehouse_profile']  = $treehouse_profile;
            $options['last_updated']         = time();

            update_option('wptreehouse_badges', $options);
        }

    }

    $options = get_option('wptreehouse_badges');

    if($options != '') {

        $wptreehouse_username = $options['wptreehouse_username'];
        $wptreehouse_profile =  $options['wptreehouse_profile'];
    }

    var_dump($wptreehouse_profile);

    require('inc/options-page-wrapper.php');
}



function wptreehouse_badges_get_profile( $wptreehouse_username ) {  

    $json_feed_url = 'http://www.teamtreehouse.com/' . $wptreehouse_username . '.json';
    $args = array('timeout' => 120);

    $json_feed = wp_remote_get( $json_feed_url, $args);

    $wptreehouse_profile = json_decode($json_feed['body']); 

    return $wptreehouse_profile;

}



function wptreehouse_badges_styles() {

    wp_enqueue_style('wptreehouse_badges_styles', plugins_url('wptreehouse-badges/wptreehouse-badges.css' ) );
}

add_action('admin_head','wptreehouse_badges_styles');
?>