Adds incrByFloat as cluster command

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

@@ -293,6 +293,17 @@ public class JedisCluster implements JedisCommands, BasicCommands, Closeable {
 	}.run(key);
     }
 
+    @Override
+    public Double incrByFloat(final String key, final double value) {
+    return new JedisClusterCommand<Double>(connectionHandler, timeout,
+        maxRedirections) {
+        @Override
+        public Double execute(Jedis connection) {
+        return connection.incrByFloat(key, value);
+        }
+    }.run(key);
+    }
+
     @Override
     public Long incr(final String key) {
 	return new JedisClusterCommand<Long>(connectionHandler, timeout,

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

@@ -48,6 +48,8 @@ public interface JedisCommands {
 
     Long incrBy(String key, long integer);
 
+    Double incrByFloat(String key, double value);
+
     Long incr(String key);
 
     Long append(String key, String value);