Work on locale stage.

src/stage.rs

@@ -53,4 +53,11 @@ pub struct KiraConfig {
     pub config_trail: Vec<StageResult>,
 }
 
+impl KiraConfig {
+    pub fn get_stage(&self, name: &str) -> Option<StageResult> {
+        self.config_trail.iter().find(|v| v.name == name)
+        .and_then(|v| Some(v.clone()))
+    }
+    
+}