Add base for handling and storing progress

assets/javascript/utils/storage.js

@@ -0,0 +1,20 @@
+define(function(){
+    /*
+     * Simple module for storing data in the browser's local storage
+     */
+    return {
+        set: function(key, value) {
+            localStorage[key] = JSON.stringify(value);
+        },
+        get: function(key, def) {
+            try {
+                return JSON.parse(localStorage[key]) || def;
+            } catch(err) {
+                return localStorage[key] || def;
+            }
+        },
+        remove: function(key) {
+            localStorage.removeItem(key);
+        }
+    };
+});