added new OrQuery class

spring-data-mongodb/src/main/java/org/springframework/data/document/mongodb/query/OrQuery.java

@@ -0,0 +1,9 @@
+package org.springframework.data.document.mongodb.query;
+
+public class OrQuery extends Query {
+
+	public OrQuery(Query... q) {
+		super.or(q);
+	}
+	
+}

spring-data-mongodb/src/test/java/org/springframework/data/document/mongodb/query/QueryTests.java

@@ -40,8 +40,7 @@ public class QueryTests {
 
 	@Test
 	public void testOrQuery() {
-		Query q = new Query();;
-		q.or(
+		Query q = new OrQuery(
 				new Query(where("name").is("Sven")).and(where("age").lt(50)), 
 				new Query(where("age").lt(50)),
 				new BasicQuery("{'name' : 'Thomas'}")