[Crate] Add better documentation for generic game implementation (#49)

src/lib.rs

@@ -2,6 +2,7 @@
 //!
 //! # Usage example:
 //!
+//! ## For a specific game
 //! ```
 //! use gamedig::games::tf2;
 //!
@@ -12,12 +13,26 @@
 //! }
 //! ```
 //!
+//! ## Using a game definition
+//! ```
+//! use gamedig::games::{GAMES, query};
+//!
+//! let game = GAMES.get("tf2").unwrap(); // Get a game definition, the full list can be found in src/games/mod.rs
+//! let response = query(game, &"127.0.0.1".parse().unwrap(), None); // None will use the default port
+//! match response {
+//!     Err(error) => println!("Couldn't query, error: {}", error),
+//!     Ok(r) => println!("{:#?}", r),
+//! }
+//! ```
+//!
 //! # Crate features:
-//! Enabled by default: None
+//! Enabled by default: `game_defs`
 //!
 //! `serde` - enables json serialization/deserialization for all response types.
 //! <br> `no_games` - disables the included games support. <br>
-//! `no_services` - disables the included services support.
+//! `no_services` - disables the included services support. <br>
+//! `game_defs` - Include game definitions for programmatic access (enabled by
+//! default).
 
 pub mod errors;
 #[cfg(not(feature = "no_games"))]