add SCAN, HSCAN, SSCAN and ZSCAN

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

@@ -9,6 +9,7 @@ import java.util.Map;
 import java.util.Map.Entry;
 
 import static redis.clients.jedis.Protocol.toByteArray;
+import static redis.clients.jedis.Protocol.Command.HSCAN;
 
 public class Client extends BinaryClient implements Commands {
     public Client(final String host) {
@@ -807,4 +808,16 @@ public class Client extends BinaryClient implements Commands {
     public void hincrByFloat(final String key, final String field, double increment) {
     	hincrByFloat(SafeEncoder.encode(key), SafeEncoder.encode(field), increment);
     }
+    
+    public void hscan(final String key, int cursor, final ScanParams params) {
+ 	hscan(SafeEncoder.encode(key), cursor, params);
+    }
+    
+    public void sscan(final String key, int cursor, final ScanParams params) {
+ 	sscan(SafeEncoder.encode(key), cursor, params);
+    }
+    
+    public void zscan(final String key, int cursor, final ScanParams params) {
+ 	zscan(SafeEncoder.encode(key), cursor, params);
+    }
 }