links in backup-3.4.0

- old
+ new

@@ -1,11 +1,3 @@
-Backup's Ruby Gem releases:
-http://rubygems.org/gems/backup
-
-Backup's Git repository:
-https://github.com/meskyanichi/backup
-
-Backup's Issue Tracker:
-https://github.com/meskyanichi/backup/issues
-
-Backup's Wikipedia/Documentation/Guides:
-https://github.com/meskyanichi/backup/wiki
\ No newline at end of file
+Project Home:  https://github.com/meskyanichi/backup
+Documentation: https://github.com/meskyanichi/backup/wiki
+Issue Tracker: https://github.com/meskyanichi/backup/issues