update default template and readme

Author: korthjp17

README.md

@@ -26,6 +26,15 @@ A block to embed code like iFrames or Javascript on a page
 
 Adds a block to display embeddable code on a page. Useful for iFrames or Javascript embeds, like MailChimp sign up forms.
 
+## Screen Shots
+
+#### Front End sample of an Embed Code Element
+![Front End sample of an Embed Code Element](./readme-images/embed-block-sample.jpg)
+
+#### CMS - Embed Code Element Main Tab
+![CMS - Embed Code Element Main Tab](./readme-images/embed-block-cms.jpg)
+
+
 ## Getting more elements
 
 See [Elemental modules by Dynamic](https://github.com/dynamic/silverstripe-elemental-blocks#getting-more-elements)

readme-images/embed-block-cms.jpg

@@ -1,4 +1,3 @@
-<div class="$ExtraClass">
-    <% if $ShowTitle %><h3>$Title</h3><% end_if %>
-    <% if $Code %>$Code<% end_if %>
-</div>
+<% if $Title && $ShowTitle %><h2 class="element__title">$Title</h2><% end_if %>
+
+<% if $Code %>$Code<% end_if %>