Migrated tests to jest

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

test2/flip/flip.js

@@ -0,0 +1,2 @@
+const flip = fn => (first, ...rest) => fn(...rest, first);
+module.exports = flip;

test2/flip/flip.test.js

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+const expect = require('expect');
+const flip = require('./flip.js');
+
+test('Testing flip', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof flip === 'function').toBeTruthy();
+  let a = { name: 'John Smith' };
+  let b = {};
+  const mergeFrom = flip(Object.assign);
+  let mergePerson = mergeFrom.bind(null, a);
+  expect(mergePerson(b)).toEqual(a);
+});