adding contributing text to readme

Author: HerrMagiic

README.md

@@ -116,3 +116,8 @@ Defines if the command requires specific permissions to execute:
 ### Multiple Files
 
 If you want to have multiple files instead of one big one create a folder in plugins/CustomCommands named Commands there you can create json files and folders as many as you want and with any name.
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+## Contributing
+
+You are welcome to contribute to this project! Simply create a pull request, and it will be promptly reviewed.