reorganze a bit

src/main.rs

@@ -19,8 +19,16 @@ fn main() {
         exit(0);
     }
 
-    println!("Config path: {}", config_path.to_str().unwrap());
+    match run(config_path) {
+        Ok(_) => {}
+        Err(e) => {
+            println!("{}", e);
+            exit(1);
+        }
+    }
+}
 
+fn run(config_path: PathBuf) -> Result<(), Error> {
     let config: Config;
 
     match get_config_from_path(config_path) {
@@ -28,11 +36,13 @@ fn main() {
             config = conf;
         }
         Err(e) => {
-            panic!("{}", e);
+            return Err(e);
         }
     }
 
     println!("{:?}", config);
+
+    return Ok(());
 }
 
 fn get_config_from_path(path: PathBuf) -> Result<Config, Error> {