diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..f9539255ca070e4506128863c189bac2a4fa0824
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,17 @@
+# Change Log
+
+## [UNRELEASED]
+
+(nothing yet)
+
+## 0.1.0 -- 2018-11-14
+
+- Limit pad URL to `https://pad.libreho.st/*`
+- Put in production at https://talk.libreho.st
+
+## 0.0.1 -- 2018-11-12
+
+- Fork from https://github.com/fuerst/embed-etherpad-lite
+- Point to https://pad.libreho.st/
+
+[unreleased]: /../compare/v0.1.0...HEAD
diff --git a/README.md b/README.md
index b3393d4d752ced2ceb7d2118dd631481eedbb551..cb99cade6eff7815ae3f630094a5f155fd67ba59 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,12 @@
 # Embed codimd pads into Discourse for libreho.st
 
-This allows you to embed libreho.st pads into discourse. Its based on https://github.com/fuerst/embed-etherpad-lite which embeds pads into posts using the Onebox mechanism.
+This allows you to embed libreho.st pads into discourse. It is based on https://github.com/fuerst/embed-etherpad-lite which embeds pads into posts using the Onebox mechanism.
 
 # Usage
 
-After installation just insert codimd links into your Discourse posts or comments. The Etherpad will be embedded using the famous and beloved [IFRAME](https://en.wikipedia.org/wiki/HTML_element#Frames) tag and is fully operational.
+**This is meant to use with <https://talk.libreho.st>. You need to fork and adapt to your case.**
+
+After installation just insert codimd links into your Discourse posts or comments. The pad will be embedded using the famous and beloved [IFRAME](https://en.wikipedia.org/wiki/HTML_element#Frames) tag and is fully operational.
 
 # Installation
 
@@ -18,5 +20,4 @@ The configuration line you have to add to your container's app.yml file looks li
 
 # Details
 
-The plugin uses the ["Brand new plugin interface"](https://meta.discourse.org/t/brand-new-plugin-interface/8793/88) to change URL's like `http(s)://domain.tld/pad-id` into HTML code like `<iframe src='http(s)://domain.tld/pad-id'></iframe>`.
-
+The plugin uses the ["Brand new plugin interface"](https://meta.discourse.org/t/brand-new-plugin-interface/8793/88) to change URL's like `http(s)://domain.example/pad-id` into HTML code like `<iframe src='http(s)://domain.example/pad-id'></iframe>`.
diff --git a/plugin.rb b/plugin.rb
index e0cbd8d50375d292cc92432d83a128c35f6964ea..32b13035d724b55d836688642f32fbd208ea0b9e 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -6,8 +6,8 @@
 
 class Onebox::Engine::CodimdOnebox
   include Onebox::Engine
-  #we only want to match for a specific codimd domain
-  matches_regexp /pad.libreho.st/
+  # we only want to match for a specific codimd domain
+  matches_regexp %r{\Ahttps://pad\.libreho\.st/}
 
   def to_html
     "<iframe name='embed_readwrite' src='#{@url}' style='border-width:0' frameborder='0' scrolling='no' width='100%' height=600></iframe><br><a href='#{@url}' target='_blank'>Goto this Pad</a>"