refactoring (#4)

__tests__/functions/Roll.js

@@ -0,0 +1,10 @@
+const Roll = require('@dsabot/Roll');
+
+describe('Beware of a misunderstanding! A sequence of dice rolls', () => {
+  const expected = [1,2,3,4,5,6];
+  it('matches even with an unexpected number 7', () => {
+    expect(Roll(1,6)).not.toEqual(
+      expect.arrayContaining(expected),
+    );
+  });
+});