add consts file

src/config/consts.rs

@@ -0,0 +1 @@
+pub const CONFIG_FILE: &str = "mdp.yml";

src/config/mod.rs

@@ -2,6 +2,7 @@ use serde_yaml;
 
 pub mod read;
 pub mod validate;
+pub mod consts;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Config {

src/config/read.rs

@@ -3,10 +3,12 @@ use std::path::PathBuf;
 use std::fs::File;
 use std::io::Read;
 
+use config::consts;
+
 
 fn get_config_path() -> PathBuf {
     let mut working_dir = current_dir().unwrap();
-    working_dir.push("mdp.yml");
+    working_dir.push(consts::CONFIG_FILE);
     return working_dir;
 }