implemented bitcount and bitop commands for Redis 2.6

src/main/java/redis/clients/jedis/ShardedJedis.java

@@ -483,4 +483,19 @@ public class ShardedJedis extends BinaryShardedJedis implements JedisCommands {
 	Jedis j = getShard(key);
 	return j.linsert(key, where, pivot, value);
     }
+
+    public Long bitcount(final String key) {
+	Jedis j = getShard(key);
+	return j.bitcount(key);
+    }
+
+    public Long bitcount(final String key, long start, long end) {
+	Jedis j = getShard(key);
+	return j.bitcount(key, start, end);
+    }
+
+    public Long bitop(BitOP op, final String destKey, String... srcKeys) {
+	Jedis j = getShard(destKey);
+	return j.bitop(op, destKey, srcKeys);
+    }
 }