Add dotenv to example

examples/token.rs

@@ -0,0 +1,18 @@
+// Copyright (c) Tribufu. All Rights Reserved
+
+use dotenv::dotenv;
+use std::env;
+use tribufu::*;
+
+#[tokio::main]
+async fn main() {
+    dotenv().ok();
+
+    let client_id = env::var("CLIENT_ID").unwrap().parse::<u64>().unwrap();
+    let client_secret = env::var("CLIENT_SECRET").unwrap();
+
+    let client = TribufuClient::new(client_id, client_secret).unwrap();
+    let token = client.get_token().await.unwrap();
+
+    println!("{:?}", token)
+}