fixed clear cache rake task + puts

lib/tasks/cache.rake

@@ -3,12 +3,14 @@ namespace :cache do
   desc "Clear all caches"
   task :clear => :environment do
     if RedisCache.configured?
-      redis = Redis.redis_connection
+      redis = RedisCache.redis_connection
+      puts "Clearing Cache..."
       redis.keys do |k|
         if k.match(/^#{RedisCache.cache_prefix}/).present?
           redis.del(k)
         end
       end
+      puts "Done!"
     else
       puts "Redis Cache is not configured"
     end