Remove legacy code and update README

Closes #2

3 files changed, 17 insertions, 13 deletions

diff --git a/README.md b/README.md
index c06b373..52cd9c9 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 discourse-openstreetmap
 =======================
 
-Discourse plugin to support OSM via URL Oneboxing and iframe whitelisting
-
+> Discourse plugin to support OSM via URL Oneboxing
 
 ## Installation on top of Docker image
 
@@ -24,9 +23,21 @@ Rebuild Discourse: `/var/discourse/launcher rebuild app`
 
 ### What URLs are oneboxed by this plugin?
 
-`http://www.openstreetmap.org/?mlat=[Marker Latitude]&mlon=[Marker Longitude]#map=[Zoom Level]/[Latitude]/[Longitude]&layers=[Layer code]`
+    https://www.openstreetmap.org/?mlat=[Marker Latitude]&mlon=[Marker Longitude]#map=[Zoom Level]/[Latitude]/[Longitude]&layers=[Layer code]
+
+will be onboxed as a mini-map:
+
+> ![onebox-sample](https://user-images.githubusercontent.com/157609/31852642-79ace722-b67b-11e7-848f-41ba85fd80ef.png)
+
+### Can I just copy&paste `<iframe>` code from OpenStreetMap.org's share menu?
+
+Sure you can! In past it was done by this plugin, but there is now an `allowed iframes` setting on the Discourse settings page itself at `/admin/site_settings/category/all_results?filter=allowed_iframes`.
+
+Something to keep in mind: embedding of OSM `iframe` is enabled by default only for HTTPS URL. This means if it does not work for you, change `<iframe src=http://www.openstreetmap.org/export/embed.html?(..)` to have `src=https://` instead.
+
 
-### I don't like/need oneboxing: can't I just copy&paste `<iframe>` code from OpenStreetMap.org's share menu?
+> ![iframe-example](https://user-images.githubusercontent.com/157609/31852829-4c23c4f2-b67f-11e7-8cd3-f0d4c14bf93c.png)
 
-Sure you can! You don't even need this plugin for that, as [iframe code is whitelisted in Discourse itself since v1.1.1](https://github.com/discourse/discourse/commit/9dccd975d9446fc99f4c76322b8934c5afd25888).
+### Is this all there is? I want more OSM integration!
 
+You are in luck! There is a great [Locations Plugin](https://meta.discourse.org/t/locations-plugin/69742?u=lidel), which can be installed in addition to this one.
diff --git a/assets/javascripts/iframe_whitelist.js b/assets/javascripts/iframe_whitelist.js
deleted file mode 100644
index a7aa880..0000000
--- a/assets/javascripts/iframe_whitelist.js
+++ /dev/null
@@ -1,4 +0,0 @@
-(function() {
-  if (Discourse.dialect_deprecated) { return; }
-  Discourse.Markdown.whiteListIframe(/^(https?:)?\/\/www\.openstreetmap\.org\/export\/embed.html\?.+/i);
-})();
diff --git a/plugin.rb b/plugin.rb
index 57d3374..0d15c87 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -1,10 +1,7 @@
 # name: OpenStreetMap Onebox
-# version: 0.1
+# version: 0.2
 # authors: Marcin Rataj
 
-# whitelist raw iframes posted by users
-register_asset('javascripts/iframe_whitelist.js', :server_side)
-
 class Onebox::Engine::OpenStreetMapOnebox
   include Onebox::Engine