Revert "Revert "alard/megawarc -> ArchiveTeam/megawarc""

This reverts commit 5849adf3f2.

README.md

@@ -71,5 +71,5 @@ Requirements
 ------------
 These scripts use Bash and Curl.
 
-You should clone https://github.com/alard/megawarc to the `megawarc/` subdirectory of these scripts. The megawarc utility requires Python and Gzip.
+You should clone https://github.com/ArchiveTeam/megawarc to the `megawarc/` subdirectory of these scripts. The megawarc utility requires Python and Gzip.