Adds link to JB to Platform Overview

Completes the Platform Overview page with mention of Android 4.1 and link to the features page for JB.
Signed-off-by: Manuel R. Ciosici <manuelrciosici@gmail.com>

Change-Id: I32d66206326c977fa05f4e55841c189f8434e43a
diff --git a/src/source/overview.md b/src/source/overview.md
index 804c1f0..7f664ca 100644
--- a/src/source/overview.md
+++ b/src/source/overview.md
@@ -23,6 +23,10 @@
 
 The links below will navigate you away from this site.
 
+## [Android 4.1](https://developer.android.com/about/versions/jelly-bean.html) ##
+
+Android 4.1 corresponded to the "Jelly Bean" milestone branch, and has an API level of 16.
+
 ## [Android 4.0](https://developer.android.com/sdk/android-4.0-highlights.html) ##
 
 Android 4.0 corresponded to the "IceCreamSandwich" milestone branch, and has an API level of 14.