Updated gitignore

.idea/.gitignore

@@ -6,3 +6,5 @@
 # Datasource local storage ignored files
 /dataSources/
 /dataSources.local.xml
+../.idea
+../out
\ No newline at end of file

src/Interpreter.java

@@ -3,7 +3,7 @@ import java.io.FileNotFoundException;
 import java.util.*;
 
 /**
- * the main class, runs all the sub-routinse
+ * the main class, runs all the sub-routine
  */
 public class Interpreter {
     public static void main(String[] args) {
@@ -39,9 +39,9 @@ public class Interpreter {
             }
         }
         catch (FileNotFoundException e){
-            System.out.println("File can't be found.");
-             e.printStackTrace();
-            // System.exit(1);
+            System.err.println("File can't be found.");
+            // e.printStackTrace();
+            System.exit(1);
         }
     }
 }