Adding REST archetype.

Change-Id: Ic129f6d0d419f0d44a371b7758802377a32f9962
diff --git a/tools/package/archetypes/rest/src/main/resources/archetype-resources/src/main/java/AppWebResource.java b/tools/package/archetypes/rest/src/main/resources/archetype-resources/src/main/java/AppWebResource.java
new file mode 100644
index 0000000..2cb27dc
--- /dev/null
+++ b/tools/package/archetypes/rest/src/main/resources/archetype-resources/src/main/java/AppWebResource.java
@@ -0,0 +1,48 @@
+#set( $symbol_pound = '#' )
+#set( $symbol_dollar = '$' )
+#set( $symbol_escape = '\' )
+/*
+ * Copyright 2014-2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ${package};
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onosproject.rest.AbstractWebResource;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.core.Response;
+
+import static org.onlab.util.Tools.nullIsNotFound;
+
+/**
+ * Sample web resource.
+ */
+@Path("sample")
+public class AppWebResource extends AbstractWebResource {
+
+    /**
+     * Get hello world greeting.
+     *
+     * @return 200 OK
+     */
+    @GET
+    @Path("")
+    public Response getGreeting() {
+        ObjectNode node = mapper().createObjectNode().put("hello", "world");
+        return ok(node).build();
+    }
+
+}