DEP 0003 -- Added JavaScript unit tests.

Setup QUnit, added tests, and measured test coverage.

Thanks to Nick Sanford for the initial tests.

Gruntfile.js

@@ -0,0 +1,20 @@
+var globalThreshold = 50;  // Global code coverage threshold (as a percentage)
+
+module.exports = function(grunt) {
+    grunt.initConfig({
+        // Configuration to be run (and then tested).
+        blanket_qunit: {
+            default_options: {
+                options: {
+                    urls: ['js_tests/tests.html?coverage=true&gruntReport'],
+                    globalThreshold: globalThreshold,
+                    threshold: 10
+                }
+            }
+        }
+    });
+
+    grunt.loadNpmTasks('grunt-blanket-qunit');
+    grunt.registerTask('test', ['blanket_qunit']);
+    grunt.registerTask('default', ['test']);
+};