Add xlsx project

README.md

@@ -440,6 +440,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [mp](https://github.com/sanbornm/mp) - A simple cli email parser. It currently takes stdin and outputs JSON.
 * [profile](https://github.com/davecheney/profile) - Simple profiling support package for Go
 * [sqlx](https://github.com/jmoiron/sqlx) - provides a set of extensions on top of the excellent built-in database/sql package
+* [xlsx](https://github.com/tealeg/xlsx) - Library to simplify reading the XML format used by recent version of Microsoft Excel in Go programs.
 
 
 ## Video