Update README.md

Author: obalunenko

README.md

@@ -59,7 +59,7 @@ This repository contains solutions for puzzles and cli tool to run solutions to
 <details>
   <summary>2016</summary>  
 
-  - [ ] [Day 1: No Time for a Taxicab](https://adventofcode.com/2016/day/1)
+  - [x] [Day 1: No Time for a Taxicab](https://adventofcode.com/2016/day/1)
   - [ ] [Day 2: Bathroom Security](https://adventofcode.com/2016/day/2)
   - [ ] [Day 3: Squares With Three Sides](https://adventofcode.com/2016/day/3)
   - [ ] [Day 4: Security Through Obscurity](https://adventofcode.com/2016/day/4)