docs: Edited "Promote with Ads" page; created "Nearby" feature page.

The Nearby feature appears in the "Engage & retain" section of DAC.

Bug: 28436589
Change-Id: I2250ac79d1b568eaa535fcbe05187811c90b6ea3
diff --git a/docs/html/jd_collections.js b/docs/html/jd_collections.js
index 4909206d..905d191 100644
--- a/docs/html/jd_collections.js
+++ b/docs/html/jd_collections.js
@@ -419,7 +419,8 @@
       "distribute/engage/easy-signin.html",
       "distribute/analyze/build-better-apps.html",
       "distribute/engage/gcm.html",
-      "distribute/engage/beta.html"
+      "distribute/engage/beta.html",
+      "distribute/engage/nearby.html"
     ]
   },
   "distribute/monetize": {
@@ -761,6 +762,14 @@
       "https://support.google.com/adwords/answer/6167162"
     ]
   },
+  "distribute/users/nearby": {
+    "title": "",
+    "resources": [
+      "https://developers.google.com/nearby/",
+      "https://www.youtube.com/watch?v=hultDpBS22s",
+      "https://developers.google.com/beacons"
+    ]
+  },
   "distribute/users/buildbuzz": {
     "title": "",
     "resources": [