docs update

Author: abose

README.md

@@ -1,6 +1,8 @@
 # Extension Template
 
-Quick start and create a new extension by using this template. Follow the below 3 steps:
+Quick start and create a new extension by using this template. Follow the below 4 steps:
+
+Refer this [link](https://github.com/phcode-dev/phoenix/wiki/How-To-Write-Extensions-And-Themes) for detailed extension docs after following the below 3 steps:
 
 ## step 1
 
@@ -10,3 +12,24 @@ Login with github: https://github.com/login
 
 Create a new repository using this template.
 ![New extension from template](https://user-images.githubusercontent.com/5336369/223931565-2708e516-a422-4e7b-9d89-9ac48c919c3d.gif)
+
+## step 3
+
+* Clone your GitHub Repo created from `step 2`. See [this link](https://docs.github.com/en/repositories/creating-and-managing-repositories/cloning-a-repository) to lean how to clone a repository from GitHub.
+
+## step 4
+
+* Go to https://create.phcode.dev .This is a special development centric website of phcode.dev which shows non minified js/css files in the debugger.
+* Open the cloned folder and select `Debug > Load Project As Extension`
+
+![image](https://user-images.githubusercontent.com/5336369/224746152-0416a862-891a-4fe1-b9dd-09add25a6cc0.png)
+
+
+* You can now make code changes to your extension and select `Debug> Reload With Extensions` to test the new code changes.
+* If you have an extension loaded, select `Debug> Reload With Extensions` when you are done developing the extension.
+
+![image](https://user-images.githubusercontent.com/5336369/224747590-556dff1d-5b29-41c3-88a0-3ce72ab643d0.png)
+
+# Detailed Documentation
+
+Please go to https://github.com/phcode-dev/phoenix/wiki/How-To-Write-Extensions-And-Themes for more documentation/community support links.