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contributing.md

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+Contributing to CodeIgniter Ion Auth.
+===================================
+
+First of all thanks for your interest. But contributing to this repo has some requirements.
+Those requirements are listed below.
+
+### Issue tracker. 
+The issue tracker is the preferred channel for bug reports, features requests and submitting pull requests, but please respect the following restrictions:
+
+- Please do not use the issue tracker for personal support requests.
+- Please do not derail or troll issues. Keep the discussion on topic and respect the opinions of others.
+
+### Requirements
+- Make sure your `PHP`Code is following the Codeigniter standards. 
+- Add spacings between the php begin and end tag. 
+- Comments should also have a space between `//` and the begin of the comment. like `// Example`.
+
+