added ScoreCalcs directory and package.json

Author: jwoolbright23

modules/exercises/ScoreCalcs/averages.js

@@ -0,0 +1,19 @@
+function averageForStudent(nameIndex,scores){
+  let sum = 0;
+  for (let i=0; i<scores.length; i++){
+    sum += scores[nameIndex][i];
+  }
+  let average = sum/scores[nameIndex].length;
+  return average;
+}
+
+function averageForTest(testIndex,scores){
+  let sum = 0;
+  for (let i=0; i<scores.length; i++){
+    sum += scores[i][testIndex];
+  }
+  let average = sum/scores[0].length;
+  return average;
+}
+
+//TODO: Export all functions within an object.

modules/exercises/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "Dependencies for Chapter 13 Exercises: Modules",
+  "version": "1.0.0",
+  "description": "This package.json file includes all dependencies needed to run code within files contained in this directory",
+  "main": "index.js",
+  "dependencies": {
+    "readline-sync": "^1.4.10"
+  },
+  "scripts": {
+    "start": "node index.js"
+  },
+  "author": "John Woolbright",
+  "license": "ISC"
+}