Add Apollo Android to clients (graphql#299)

Author: Sashko Stubailo

site/code/index.html.js

@@ -361,6 +361,10 @@ Code that executes a hello world GraphQL query with \`graphql-clj\`:
 
   - [Apollo iOS](http://dev.apollodata.com/ios/) ([github](https://github.com/apollostack/apollo-ios)): A GraphQL client for iOS that returns results as query-specific Swift types, and integrates with Xcode to show your Swift source and GraphQL side by side, with inline validation errors.
 
+### Java / Android
+
+  - [Apollo Android](https://github.com/apollographql/apollo-android): A strongly-typed, caching GraphQL client for Android, written in Java.
+
 ### C# / .NET
 
   - [graphql-net-client](https://github.com/bkniffler/graphql-net-client): Basic example GraphQL client for .NET.