Add Android Camera To Unity Plugin

webrtc/examples/unityplugin/README

Index: webrtc/examples/unityplugin/README
diff --git a/webrtc/examples/unityplugin/README b/webrtc/examples/unityplugin/README
index 82a466ac0e2613db087720c005ad1471bfb02d1c..5f26b89488c1c3b7ac9fa9b7c32eb30085af0e8d 100644
--- a/webrtc/examples/unityplugin/README
+++ b/webrtc/examples/unityplugin/README
@@ -1,7 +1,10 @@
-This directory contains an example Unity native plugin for Windows OS.
+This directory contains an example Unity native plugin for Windows OS and Android.
+
 The APIs use Platform Invoke (P/Invoke) technology as required by Unity native plugin.
 This plugin dll can also be used by Windows C# applications other than Unity.
 
+For detailed build instruction on Android, see ANDROID_INSTRUCTION
+
 An example of wrapping native plugin into a C# managed class in Unity is given as following:
 
 using System;