added unit testing, and started implementing unit tests...phew

node_modules/has/test/index.js

@@ -0,0 +1,10 @@
+'use strict';
+
+var test = require('tape');
+var has = require('../');
+
+test('has', function (t) {
+  t.equal(has({}, 'hasOwnProperty'), false, 'object literal does not have own property "hasOwnProperty"');
+  t.equal(has(Object.prototype, 'hasOwnProperty'), true, 'Object.prototype has own property "hasOwnProperty"');
+  t.end();
+});