Implement all Jedis cluster commands and rename RedisSlot class

src/test/java/redis/clients/jedis/tests/utils/JedisClusterCRC16.java

@@ -0,0 +1,29 @@
+package redis.clients.jedis.tests.utils;
+
+public class JedisClusterCRC16 {
+	public final static int polynomial = 0x1021;	// Represents x^16+x^12+x^5+1
+	static int crc;
+	
+	public JedisClusterCRC16(){
+		crc = 0x0000;
+	}
+	
+	public static int getSlot(String key) { 
+        for (byte b : key.getBytes()) {
+            for (int i = 0; i < 8; i++) {
+                boolean bit = ((b   >> (7-i) & 1) == 1);
+                boolean c15 = ((crc >> 15    & 1) == 1);
+                crc <<= 1;
+                // If coefficient of bit and remainder polynomial = 1 xor crc with polynomial
+                if (c15 ^ bit) crc ^= polynomial;
+             }
+        }
+
+        return crc &= 0xffff % 16384;
+    }	
+	
+	public static void main(String[] args) {
+		System.out.println(getSlot("test"));
+	}
+	
+}