Add Documentation

[Majekdor]

Add a wiki here on GitHub for PvPToggle.

https://github.com/Majekdor/PvPToggle/wiki

Documentation Needed 📘

• Commands
• Permissions
• Color Formatting
• Developer API Usage
• Placeholder Information
• Config Options
• Plugin Hook Information and Usage
• Storage Methods (Json/SQL)

If anyone has anything else they believe should be documented comment on this issue.