Test migration to jest by hand

Apparently using regular expressions is way easier.

test/hammingDistance/hammingDistance.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const hammingDistance = require('./hammingDistance.js');
+
+
+  test('hammingDistance is a Function', () => {
+  expect(hammingDistance).toBeInstanceOf(Function);
+});
+  t.equal(hammingDistance(2, 3), 1, "retuns hamming disance between 2 values");
+