Update README.md and LICENSE

Author: intitni

LICENSE

@@ -2,6 +2,8 @@
 
 This license is a combination of the GPLv3 and some additional agreements.
 
+Features that requires a Plus license key are not included in this project, and are not open source.
+
 As a contributor, you agree that your contributed code:
 a. may be subject to a more permissive open-source license in the future.
 b. can be used for commercial purposes.

README.md

@@ -6,6 +6,8 @@ Copilot for Xcode is an Xcode Source Editor Extension that provides GitHub Copil
 
 <a href="https://www.buymeacoffee.com/intitni" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 60px !important;width: 217px !important;" ></a>
 
+[Get a Plus License Key to unlock more features and support this project](https://intii.lemonsqueezy.com/checkout/buy/298a8d4c-11fb-4ecd-b328-049589645449)
+
 ## Features
 
 - Code Suggestions (powered by GitHub Copilot and Codeium).
@@ -28,13 +30,16 @@ Copilot for Xcode is an Xcode Source Editor Extension that provides GitHub Copil
 - [Update](#update)
 - [Feature](#feature)
 - [Key Bindings](#key-bindings)
+- [Plus Features](#plus-features)
 - [Limitations](#limitations)
 - [License](#license)
 
-For frequently asked questions, check [FAQ](https://github.com/intitni/CopilotForXcode/issues/65).
+For frequently asked questions, check [FAQ](https://github.com/intitni/CopilotForXcode/wiki/Frequently-Asked-Questions).
 
 For development instruction, check [Development.md](DEVELOPMENT.md).
 
+For more information, check the [wiki](https://github.com/intitni/CopilotForXcode/wiki)
+
 ## Prerequisites
 
 - Public network connection.
@@ -296,6 +301,25 @@ Essentially using `⌥⇧` as the "access" key combination for all bindings.
 
 Another convenient method to access commands is by using the `⇧⌘/` shortcut to search for a command in the menu bar.
 
+## Plus Features
+
+The pre-built binary contains a set of exclusive features that can only be accessed with a Plus license key. To obtain a license key, please visit [this link](https://intii.lemonsqueezy.com/checkout/buy/298a8d4c-11fb-4ecd-b328-049589645449).
+
+These features are included in another repo, and are not open sourced.
+
+The currently available Plus features include:
+
+- Browser tap in chat panel.
+- Unlimited custom commands.
+
+Since the app needs to manage license keys, it will send network request to `https://copilotforxcode-license.intii.com`,
+- when you activate the license key
+- when you deactivate the license key
+- when you opened the host app or the service app if a license key is available
+- every 24 hours if a license key is available
+
+The request contains only the license key, the email address (only on activation), and an instance id. You are free to MITM the request to see what data is sent.
+
 ## Limitations
 
 - The extension uses some dirty tricks to get the file and project/workspace paths. It may fail, it may be incorrect, especially when you have multiple Xcode windows running, and maybe even worse when they are in different displays. I am not sure about that though.