README.md: Reference module development guide (fixes #10)

lib/ansible/modules/extras/README.md

@@ -5,7 +5,15 @@ This repo is transitional and not yet enabled.  Do not send issues or pull reque
 
 The goal is to split library/ from ansible into git submodules. 
 
-Take care to submit tickets to the appropriate repo where modules are contained. The docs.ansible.com website indicates this at the bottom of each module documentation page.
+Reporting bugs
+==============
+
+Take care to submit tickets to the appropriate repo where modules are contained. The repo is mentioned at the bottom of modlue documentation page at [docs.ansible.com](http://docs.ansible.com/).
+
+Testing modules
+===============
+
+Ansible [module development guide](http://docs.ansible.com/developing_modules.html#testing-modules) contains the latest info about that.
 
 License
 =======