Update README.md

Author: ricardoquesada

README.md

@@ -6,3 +6,10 @@ This repository includes the source code of the binary libraries that are bundle
 This repository is only needed for cocos2d-x developers or people who want to port cocos2d-x to other platforms.
 
 As an example, if you want to support cocos2d-x in ARM64, you need to compile all these libraries for ARM64.
+
+
+## Download
+
+  $ git clone 
+  $ cd cocos2d-x-dependencies
+  $ git submodule update --init