Update Taskwarrior entry with license and language

README.md

@@ -716,7 +716,7 @@ See https://staticsitegenerators.net and https://www.staticgen.com
   * [TaskBoard](http://taskboard.matthewross.me/) - A Kanban-inspired app for keeping track of things that need to get done. ([Source code](https://github.com/kiswa/TaskBoard)) `MIT`
   * [Taskfreak](http://www.taskfreak.com/original) - a simple but efficient web based task manager written in PHP. ([Demo](http://demo.taskfreak.com/))
   * [tasks.php](https://github.com/RaymiiOrg/tasks.php) - A simple task/todo list manager `MIT`
-  * [Taskwarrior](https://taskwarrior.org/) - Taskwarrior is Free and Open Source Software that manages your TODO list from your command line. It is flexible, fast, efficient, and unobtrusive. It does its job then gets out of your way.
+  * [Taskwarrior](https://taskwarrior.org/) - Taskwarrior is Free and Open Source Software that manages your TODO list from your command line. It is flexible, fast, efficient, and unobtrusive. It does its job then gets out of your way. ([Source code](https://taskwarrior.org/download/#git)) `MIT` `C++`
   * [Tinyissue](https://github.com/mikelbring/tinyissue) - Simple Issue Tracking for Teams `MIT`
   * [Tracks](http://getontracks.org/) -  a web-based application to help you implement David Allen’s [Getting Things Done™](http://wikipedia.org/wiki/Getting_Things_Done) methodology. - `GPLV2`
   * [Wekan](http://wekan.io) - An open-source Trello-like kanban. ([Demo](https://oasis.sandstorm.io/appdemo/m86q05rdvj14yvn78ghaxynqz7u2svw6rnttptxx49g1785cdv1h), [Source code](https://github.com/wekan/wekan)) `MIT` `JavaScript/Meteor`