Updated 4.2.4 Header Editor (markdown)

4.2.4-Header-Editor.md

@@ -1,2 +1,15 @@
 [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
 
+Header Editor is an extension that allows you to modify the request header and response header, cancel a request and redirect a request.
+
+:small_orange_diamond: remove all ETag's
+ * Test: https://httpbin.org/
+ * Test: http://lucb1e.com/rp/cookielesscookies/
+
+```
+        Name: remove all ETag's
+        Type: modify the Response header
+Execute type: normal
+ Header name: etag
+
+```