Fix Gradle build + add Recommendation

Change-Id: I527da8e9171f2b6a533523bcb4d5aadd18d22db5
diff --git a/settings.gradle b/settings.gradle
index 6efb120..c5a70f3 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -45,3 +45,6 @@
 
 include ':support-customtabs'
 project(':support-customtabs').projectDir = new File(rootDir, 'customtabs')
+
+include ':support-recommendation'
+project(':support-recommendation').projectDir = new File(rootDir, 'recommendation')