DATAMONGO-1398 - Mention QBE and add links.

Original Pull Request: #349

src/main/asciidoc/new-features.adoc

@@ -4,7 +4,8 @@
 [[new-features.1-9-0]]
 == What's new in Spring Data MongoDB 1.9
 * The following annotations have been enabled to build own, composed annotations: `@Document`, `@Id`, `@Field`, `@Indexed`, `@CompoundIndex`, `@GeoSpatialIndexed`, `@TextIndexed`, `@Query`, `@Meta`.
-* Support for projections in repository query methods.
+* Support for <<projections>> in repository query methods.
+* Support for <<query-by-example>>.
 * Out-of-the-box support for `java.util.Currency` in object mapping.
 * Add support for the bulk operations introduced in MongoDB 2.6.
 * Upgrade to Querydsl 4.