Warning fixes (#54)

* More warning fixes

* Should be the last of the warning fixes

* Code cleanup

* Code formatting

src/models/api.rs

@@ -2,19 +2,9 @@ use std::default::Default;
 
 use serde::{Deserialize, Serialize};
 
-#[derive(Clone, Debug, Deserialize, Serialize)]
-pub struct API {
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct Api {
     pub url: String,
     pub endpoint: String,
     pub version: String,
 }
-
-impl Default for API {
-    fn default() -> Self {
-        API {
-            url: String::new(),
-            endpoint: String::new(),
-            version: String::new(),
-        }
-    }
-}