Updates the image embedding plugin

app/assets/javascripts/backbone/plugins/image_embed.js.coffee

@@ -1,21 +1,27 @@
 class Kandan.Plugins.ImageEmbed
-  @image_regex:   /^http.*\.(jpg|jpeg|gif|png)/i
-
+  @image_regex:   /http.*\.(jpg|jpeg|gif|png)/i
 
   @image_template: _.template '''
     <div class="image-preview">
       <a target="_blank" href="<%= image_url %>">
         <img class="image-embed" src="<%= image_url %>" height="200" width="200" />
       </a>
-      <div class="name"><%= name %></div>
+      <div class="name"><%= subtitle %></div>
     </div>
    '''
 
   @init: ()->
-    Kandan.Modifiers.register @image_regex, (message, state)=>
-      file_name = message.content.split("/").pop()
+    Kandan.Modifiers.register @image_regex, (message, state) =>
+      url        = message.content.match(@image_regex)[0]
+      fileName   = url.split("/").pop()
+      comment    = $.trim(message.content.split(url).join(""))
+      subtitle   = null
+      subtitle   = comment if comment.length > 0
+      subtitle ||= fileName
+
       message.content = @image_template({
         image_url: message.content,
-        name: file_name
+        subtitle: subtitle
       })
-      return Kandan.Helpers.Activities.build_from_message_template(message)
+
+      return Kandan.Helpers.Activities.build_from_message_template(message)