Merge pull request timoxley#34 from h0ke/master

fix typo in Basic Recursion

Author: timoxley

problems/basic_recursion/problem.txt

@@ -9,7 +9,7 @@ Implement Array#reduce using recursion.
 To test your reduction works correctly we will use your reduce implementation to execute our solution
 to the previous basic_reduce problem. i.e. your reduce function will be passed an array of words, and 
 a function, and an initial value which will return an object containing the counts for each word found
-in the array. You don't need to implement this functionality, it will supplied to your reduce
+in the array. You don't need to implement this functionality, it will be supplied to your reduce
 implementation.
 
 For simplicity, your implementation of reduce **need not replicate the behaviour of a reduce missing an initial value**.