Add documentation for creating new commands

src/framework/mod.rs

@@ -20,9 +20,11 @@
 //! 
 //! // Create a new bot instance with the state and a list of prefixes.
 //! let bot: Bot<State> = Bot::new(state, ["p."]);
+//! 
+//! bot.run(&token).await.unwrap();
 //! ```
 //! 
-//! ## Prefixes
+//! ### Prefixes
 //! 
 //! The framework supports multiple prefixes per command and allows you to set them dynamically
 //! based on server and user IDs.
@@ -40,6 +42,54 @@
 //! 
 //! let bot: Bot<State> = Bot::new(state, get_prefixes);
 //! ```
+//! 
+//! Otherwise, you can just pass a static list of prefixes as shown in the previous example.
+//! 
+//! ```
+//! // All of these are valid ways to create a bot with a prefix.
+//! let bot: Bot<State> = Bot::new(state, ["p."]);
+//! let bot: Bot<State> = Bot::new(state, "p.");
+//! let bot: Bot<State> = Bot::new(state, "p.".to_string());
+//! let bot: Bot<State> = Bot::new(state, ["p.".to_string()]);
+//! ```
+//! 
+//! Setting no prefix will make the bot raise errors when receiving messages.
+//! 
+//! ## Adding Commands
+//! 
+//! Creating a command is quite simple. You just need to implement the `Command` trait and register
+//! it with the bot.
+//! 
+//! ```
+//! use crate::framework::commands::{Command, CommandError, context::CommandContext};
+//! 
+//! pub struct MyCommand;
+//! 
+//! #[async_trait::async_trait]
+//! impl Command<State> for MyCommand {
+//!     fn name(&self) -> &'static str {
+//!         "my_command"
+//!     }
+//! 
+//!     async fn execute(&self, ctx: CommandContext<'_, T>, _args: &str) -> Result<(), CommandError> {
+//!         // Your command logic here.
+//!         ctx.send().content("Hello, world!").await.map_err(|_| CommandError::MessageSendingFailed)?;
+//! 
+//!         Ok(())
+//!     }
+//! }
+//! ```
+//! 
+//! Then you just need to register the command with the bot:
+//! 
+//! ```
+//! let bot = Bot::new(state, ["p."]).command(MyCommand);
+//! 
+//! bot.run(&token).await.unwrap();
+//! ```
+//! 
+//! Log into your Discord account and invite the bot to your server. Then you can test the command by sending
+//! `p.my_command` in a channel the bot has access to.
 
 pub mod bot;
 pub mod commands;