Warning fixes (#54)

* More warning fixes

* Should be the last of the warning fixes

* Code cleanup

* Code formatting

src/models/flags.rs

@@ -2,17 +2,8 @@ use std::default::Default;
 
 use serde::{Deserialize, Serialize};
 
-#[derive(Clone, Debug, Deserialize, Serialize)]
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
 pub struct Flags {
     pub flag: String,
     pub value: String,
 }
-
-impl Default for Flags {
-    fn default() -> Self {
-        Flags {
-            flag: String::new(),
-            value: String::new(),
-        }
-    }
-}