Adding Hanukkah of Data to challenges to look at

Author: rossdrew

README.md

@@ -8,8 +8,8 @@ My personal solutions for various programming problems I find. Each problem sou
  - [InterviewCake](https://www.interviewcake.com/question/stock-price)
  - [LeetCode](https://leetcode.com)
  - [Codeorces](http://codeforces.com/problemset)
- - [CodeChef](https://www.codechef.com/) 
-
+ - [CodeChef](https://www.codechef.com/)
+ - [Hanukkah of Data ](https://hanukkah.bluebird.sh/5784/)
 
 ### Other Avenues
  Some avenues for code exercise which may or be not be commitable:-
@@ -26,4 +26,4 @@ My personal solutions for various programming problems I find. Each problem sou
  - [TopCoder](https://github.com/rossdrew/programmingproblems/tree/master/src/main/java/com/rox/prob/topcoder) - Much more involved coding, often requiring more advanced algorithms and data structures.
  - Google Foobar - Level (1-5) based, difficulty increasing coding challenges by [Google](http://www.google.com/) - A festive challenge running two similar challenges every day in December. Ranging from simple to relatively complex.
  - [Advent of Code](https://adventofcode.com) - 25 groups of 2 festive challenges released each day in December ranging from easy to intermediate
- - [CoderByte](http://coderbyte.com) - I only looked at the example on their website, whose problem description and examples didn't match. It took about 20 minutes to write.
+ - [CoderByte](http://coderbyte.com) - I only looked at the example on their website, whose problem description and examples didn't match. It took about 20 minutes to write.