DATAGEODE-168 - Add documentation for GatewayReceiver annotation configuration support.

Resolves gh-7.

src/main/asciidoc/reference/bootstrap-annotations-quickstart.adoc

@@ -625,3 +625,31 @@ See {sdg-javadoc}/org/springframework/data/gemfire/config/annotation/EnableConti
 See {sdg-javadoc}/org/springframework/data/gemfire/listener/annotation/ContinuousQuery.html[`@ContinuousQuery` Javadoc].
 
 See <<apis:continuous-query>> and <<bootstrap-annotation-config-continuous-queries>> for more details.
+
+[[bootstap-annotations-quickstart-gatewayreceiver]]
+== Configure Gateway Receivers
+
+The replication of data between different {data-store-name} clusters is an increasingly important fault-tolerance and high availability mechanism.
+{data-store-name} WAN Replication is a mechanism that allows one {data-store-name} cluster to replicate its data to another
+{data-store-name} cluster in a reliable, fault-tolerant manner.
+
+{data-store-name} WAN replication requires two components to be configured:
+* Gateway Receiver - The WAN replication component that receives data from a remote {data-store-name} cluster's Gateway Sender
+* Gateway Senders  - The WAN replication component that sends data to a remote {data-store-name} cluster's Gateway Receiver
+
+To enable a Gateway Receiver the application class needs to be annotated with `@EnableGatewayReceiver` as follows:
+[source,java]
+----
+@Configuration
+@CacheServerApplication
+@EnableGatewayReceiver(manualStart = false, startPort = 10000, endPort = 11000, maximumTimeBetweenPings = 1000,
+    socketBufferSize = 16384, bindAddress = "localhost",transportFilters = {"transportBean1", "transportBean2"},
+    hostnameForSenders = "hostnameLocalhost"){
+      ...
+      ...
+    }
+}
+----
+NOTE: {data-store-name} is a server-side feature only and can only be configured on a CacheServer or PeerServer
+
+See {sdg-javadoc}/org/springframework/data/gemfire/wan/annotation/EnableGatewayReceiver.html[`@EnableGatewayReceiver` Javadoc].

src/main/asciidoc/reference/bootstrap-annotations.adoc

@@ -342,6 +342,7 @@ configuration metadata at runtime, before the Spring managed beans that the anno
 * `PeerCacheConfigurer`
 * `PoolConfigurer`
 * `RegionConfigurer`
+* `EnableGatewayReceiverConfigurer`
 
 For example, you can use the `CacheServerConfigurer` and `ClientCacheConfigurer` to customize the port numbers
 used by your Spring Boot `CacheServer` and `ClientCache` applications, respectively.