app/views/markdown_editor/_markdown_editor.html.erb
<div class="md-editor">
<div class="sub-nav">
<ul class='md-tabs'>
<li data-tab='tab-write' class="md-tab active">Write</li>
<li data-tab='tab-preview' class='md-tab'>Preview</li>
</ul>
</div>
<div id='tab-write' class='md-tab-content active'>
<%= render partial: 'markdown_editor/toolbar' %>
<%= capture(&block) %>
<input type="file" accept="image/*" class='markdownFileInput' onchange="uploadFile()">
<div class="mde-img">
<p>Attach images by
<a href="" class='fileUploadLink'>selecting them</a>
</p>
</div>
</div>
<div id='tab-preview' class='md-tab-content'>
<div id='md-preview'>preview</div>
</div>
</div>