Added a real link to the readme

Author: joncalhoun

002_binary_search/README.md

@@ -1 +1,3 @@
-See <http://www.calhoun.io/lets-learn-algorithms-implementing-binary-search-iteratively/> for the tutorials that go along with the code in `000_tutorial`.
+See <http://www.calhoun.io/lets-learn-algorithms-implementing-binary-search/> for the tutorials that go along with the code in `000_tutorial`.
+
+Some links there should eventually lead you to the posts on each practice problem.. I hope.