Ask for Reffy issues from breaking changes (#907)

Author: foolip

README.md

@@ -21,7 +21,8 @@ The specification is written in [Bikeshed](https://github.com/tabatkins/bikeshed
     *   [WebKit](https://bugs.webkit.org/enter_bug.cgi?product=WebKit&component=Bindings&short_desc=[WebIDL]%20)
     *   [Chromium](https://bugs.chromium.org/p/chromium/issues/entry?template=Defect%20report%20from%20developer&components=Blink%3EBindings&summary=[WebIDL]%20&comment&labels=Via-WebIDLRepo)
 *   [web-platform-tests](https://github.com/web-platform-tests/wpt/issues/new?title=%5BWebIDL%5D%20)
-*   [idlharness.js](https://github.com/web-platform-tests/wpt/issues/new?title=%5Bidlharness%5D%20) (used by testharness.js to run idl tests)
+*   [idlharness.js](https://github.com/web-platform-tests/wpt/issues/new?title=%5Bidlharness%5D%20) (used by testharness.js to run IDL tests)
+*   [Reffy](https://github.com/tidoust/reffy) (scrapes IDL from specs for [reffy-reports](https://github.com/tidoust/reffy-reports) and web-platform-tests)
 
 ### Syntax changes should be filed against the following parsers: