Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test3/hammingDistance/hammingDistance.js

@@ -0,0 +1,2 @@
+const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length;
+module.exports = hammingDistance;

test3/hammingDistance/hammingDistance.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const hammingDistance = require('./hammingDistance.js');
+
+test('Testing hammingDistance', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof hammingDistance === 'function').toBeTruthy();
+  expect(hammingDistance(2, 3)).toBe(1);
+});