Expose *SCAN commands to BinaryJedis

* method signatures are a bit similar to Jedis's *SCAN
** but it takes parameters to byte[] instead of String
* ScanParams : allow match pattern with byte[]
* ScanResult : add method to get cursor with byte[] type
* *SCAN for BinaryJedis unit tests included

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

@@ -13,7 +13,13 @@ import redis.clients.util.SafeEncoder;
 public class ScanParams {
     private List<byte[]> params = new ArrayList<byte[]>();
     public final static String SCAN_POINTER_START = String.valueOf(0);
+    public final static byte[] SCAN_POINTER_START_BINARY = SafeEncoder.encode(SCAN_POINTER_START);
 
+    public void match(final byte[] pattern) {
+	params.add(MATCH.raw);
+	params.add(pattern);
+    }
+    
     public void match(final String pattern) {
 	params.add(MATCH.raw);
 	params.add(SafeEncoder.encode(pattern));