Add docs to readme

Readme.md

@@ -1,3 +1,93 @@
 # wasm-sockets
 
 `wasm-sockets` is a WASM only rust websocket library primarily designed for creating games.
+
+This crate offers 2 (wasm-only) websocket clients.
+The first client offered is the `EventClient`. This client is event based and gives you the most control.
+
+```rs
+use console_error_panic_hook;
+use console_log;
+use log::{error, info, Level};
+use std::panic;
+use wasm_sockets::{self, WebSocketError};
+
+fn main() -> Result<(), WebSocketError> {
+    panic::set_hook(Box::new(console_error_panic_hook::hook));
+    // console_log and log macros are used instead of println!
+    // so that messages can be seen in the browser console
+    console_log::init_with_level(Level::Trace).expect("Failed to enable logging");
+    info!("Creating connection");
+
+    let mut client = wasm_sockets::EventClient::new("wss://echo.websocket.org")?;
+    client.set_on_error(Some(Box::new(|error| {
+        error!("{:#?}", error);
+    })));
+    client.set_on_connection(Some(Box::new(|client: &wasm_sockets::EventClient| {
+        info!("{:#?}", client.status);
+        info!("Sending message...");
+        client.send_string("Hello, World!").unwrap();
+        client.send_binary(vec![20]).unwrap();
+    })));
+    client.set_on_close(Some(Box::new(|| {
+        info!("Connection closed");
+    })));
+    client.set_on_message(Some(Box::new(
+        |client: &wasm_sockets::EventClient, message: wasm_sockets::Message| {
+            info!("New Message: {:#?}", message);
+        },
+    )));
+
+    info!("Connection successfully created");
+    Ok(())
+}
+```
+
+The second client offered is the `PollingClient`. This client is ideal for games, because it is designed to be used with a loop.
+This client is also much simpler than the `EventClient`. However, you can access the main `EventClient` that it is using
+if you want access to lower level control.
+
+```rs
+use console_error_panic_hook;
+use log::{info, Level};
+use std::cell::RefCell;
+use std::panic;
+use std::rc::Rc;
+#[cfg(target_arch = "wasm32")]
+use wasm_bindgen::prelude::*;
+use wasm_sockets::{self, ConnectionStatus, WebSocketError};
+
+fn main() -> Result<(), WebSocketError> {
+    panic::set_hook(Box::new(console_error_panic_hook::hook));
+    // console_log and log macros are used instead of println!
+    // so that messages can be seen in the browser console
+    console_log::init_with_level(Level::Trace).expect("Failed to enable logging");
+    info!("Creating connection");
+
+    // Client is wrapped in an Rc<RefCell<>> so it can be used within setInterval
+    // This isn't required when being used within a game engine
+    let client = Rc::new(RefCell::new(wasm_sockets::PollingClient::new(
+        "wss://echo.websocket.org",
+    )?));
+
+    let f = Closure::wrap(Box::new(move || {
+        if client.borrow().status() == ConnectionStatus::Connected {
+            info!("Sending message");
+            client.borrow().send_string("Hello, World!").unwrap();
+        }
+        // receive() gives you all new websocket messages since receive() was last called
+        info!("New messages: {:#?}", client.borrow_mut().receive());
+    }) as Box<dyn FnMut()>);
+
+    // Start non-blocking game loop
+    setInterval(&f, 100);
+    f.forget();
+
+    Ok(())
+}
+// Bind setInterval to make a basic game loop
+#[wasm_bindgen]
+extern "C" {
+    fn setInterval(closure: &Closure<dyn FnMut()>, time: u32) -> i32;
+}
+```