Added transactions support

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

@@ -0,0 +1,51 @@
+package redis.clients.jedis;
+
+public class Tuple {
+    private String element;
+    private double score;
+
+    @Override
+    public int hashCode() {
+	final int prime = 31;
+	int result = 1;
+	result = prime * result + ((element == null) ? 0 : element.hashCode());
+	long temp;
+	temp = Double.doubleToLongBits(score);
+	result = prime * result + (int) (temp ^ (temp >>> 32));
+	return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+	if (this == obj)
+	    return true;
+	if (obj == null)
+	    return false;
+	if (getClass() != obj.getClass())
+	    return false;
+	Tuple other = (Tuple) obj;
+	if (element == null) {
+	    if (other.element != null)
+		return false;
+	} else if (!element.equals(other.element))
+	    return false;
+	if (Double.doubleToLongBits(score) != Double
+		.doubleToLongBits(other.score))
+	    return false;
+	return true;
+    }
+
+    public Tuple(String element, double score) {
+	super();
+	this.element = element;
+	this.score = score;
+    }
+
+    public String getElement() {
+	return element;
+    }
+
+    public double getScore() {
+	return score;
+    }
+}