standardize on api_

src/main.rs

 fn route(c: &str, mut r: &mut Response) {
 
     let mut routes = vec![];
-    routes.push(Route::new("api/hi", hi));
-    routes.push(Route::new("api/bye", bye));
+    routes.push(Route::new("api/hi", api_hi));
+    routes.push(Route::new("api/bye", api_bye));
 
     // println!("Asked to fetch {}", c);
     //assert!(Path::new(c).exists());
     r.set_content("There is currently no API endpoint at that address.");
 }
 
-fn hi(_c: &&str, r: &mut Response) {
+fn api_hi(_c: &&str, r: &mut Response) {
     r.set_header("HTTP/1.1 200 OK\r\n\r\n");
     r.set_content("Hello there!");
 }
 
-fn bye(_c: &&str, r: &mut Response) {
+fn api_bye(_c: &&str, r: &mut Response) {
     r.set_header("HTTP/1.1 200 OK\r\n\r\n");
     r.set_content("Leaving so soon?");
 }