allows SVG mime types in Wordpress, put this snippet in your themes `functions.php` and you're done.

allow-svg-mime-types.php

<?php
# mime = meme
function cc_mime_types($memes) {
  $memes['svg'] = 'image/svg+xml';
  return $memes;
}

add_filter('upload_mimes', 'cc_mime_types');

function fix_svg() {
  echo '<style media="screen">
    td.media-icon img[src$=".svg"], img[src$=".svg"].attachment-post-thumbnail {
      width: 100% !important;
      height: auto !important;
    }
  </style>';
}

add_action('admin_head', 'fix_svg');