Add Replay

Replay is browser-focused time travelling debugger

Author: jryans

README.md

@@ -34,6 +34,7 @@ record & replay or time travel debugging
 * https://wallabyjs.com/docs/intro/time-travel-debugger.html
 * https://logrocket.com/
 * https://revdebug.gitbook.io/revdebug/supported-langauges/javascript
+* https://replay.io/
 
 # c / libc