Revert "Merge branch 'jest'"

This reverts commit f76e9e108f.

fibonacci/README.md

@@ -1,8 +1,8 @@
-# Exercise 10 - Fibonacci
+# Exercise XX - fibonacci
 
-Create a function that returns a specific member of the Fibonacci sequence:
+Create a function that returns a specific member of the fibonacci sequence:
 
-> A series of numbers in which each number ( Fibonacci number ) is the sum of the two preceding numbers. The simplest is the series 1, 1, 2, 3, 5, 8, etc.
+> a series of numbers in which each number ( Fibonacci number ) is the sum of the two preceding numbers. The simplest is the series 1, 1, 2, 3, 5, 8, etc.
 
 ```javascript
 fibonacci(4) // returns the 4th member of the series: 3  (1, 1, 2, 3)

fibonacci/fibonacci.js

@@ -1,3 +1,3 @@
 const fibonacci = function () {};
 
-};
+module.exports = fibonacci