Add an example

Add 2048 on CLI app with termbox-go

README.md

@@ -29,6 +29,7 @@ There are also some interesting projects using termbox-go:
  - [httplab](https://github.com/gchaincl/httplab) An interactive web server.
  - [tetris](https://github.com/MichaelS11/tetris) Go Tetris with AI option
  - [wot](https://github.com/kyu-suke/wot) Wait time during command is completed.
+ - [2048-go](https://github.com/1984weed/2048-go) is 2048 in Go
 
 ### API reference
 [godoc.org/github.com/nsf/termbox-go](http://godoc.org/github.com/nsf/termbox-go)