Put version back into beta mode

lib/aws/s3/version.rb

@@ -4,7 +4,7 @@ module AWS
       MAJOR    = '0'
       MINOR    = '5'
       TINY     = '0' 
-      BETA     = nil # Time.now.to_i.to_s
+      BETA     = Time.now.to_i.to_s
     end
     
     Version = [VERSION::MAJOR, VERSION::MINOR, VERSION::TINY, VERSION::BETA].compact * '.'