Add Vaadin support

Closes gh-102

initializr-service/application.yml

@@ -7,6 +7,12 @@ info:
     version: 1.2.2.RELEASE
 
 initializr:
+  env:
+    boms:
+      vaadin-bom:
+        groupId: com.vaadin
+        artifactId: vaadin-bom
+        version: 7.4.2
   dependencies:
     - name: Core
       content:
@@ -41,6 +47,15 @@ initializr:
           id: jersey
           description: Support for the Jersey RESTful Web Services framework
           versionRange: 1.2.0.RELEASE
+        - name: Vaadin
+          id: vaadin
+          facets:
+            - web
+          groupId: com.vaadin
+          artifactId: vaadin-spring-boot-starter
+          version: 1.0.0.beta2
+          description: Support for Vaadin
+          bom: vaadin-bom
         - name: Rest Repositories
           id: data-rest
           description: Support for exposing Spring Data repositories over REST via spring-data-rest-webmvc