Update scripts to support Raring

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/crawler.py b/crawler.py
index fda42d4..924ba2b 100755
--- a/crawler.py
+++ b/crawler.py
@@ -96,4 +96,4 @@
             print "  %s: %s" % hwpack
 
     print "latest nano:"
-    print "  %s %s" % latest_rfs('http://snapshots.linaro.org/quantal/images/nano')
+    print "  %s %s" % latest_rfs('http://snapshots.linaro.org/raring/images/nano')