fix bug in example (#18)

I think you meant that, which is more logical.

Author: Wis

README.md

@@ -36,7 +36,7 @@ graph
 	return graph.query("CREATE (:person{name:'amit',age:30})");
 })
 .then( () => {
-	return graph.query("MATCH (a:person), (b:person) WHERE (a.name = 'roi' AND b.name='amit') CREATE (a)-[:knows]->(a)")
+	return graph.query("MATCH (a:person), (b:person) WHERE (a.name = 'roi' AND b.name='amit') CREATE (a)-[:knows]->(b)")
 })
 .then( () => {
 	return graph.query("MATCH (a:person)-[:knows]->(:person) RETURN a")