add extract.me link

README.md

@@ -24,6 +24,10 @@ Downloads:
 * Other Gamesave Hacks
   * [GC Forever Wiki: Booting Homebrew](https://www.gc-forever.com/wiki/index.php?title=Booting_Homebrew)
 
+Convert 7z / rar to zip:
+
+* https://extract.me
+
 Special Files:
 
 * `autoexec.dol` - run by Datel SD Media Launcher Action Replay on disc load