add Tasks, fixes #839 (#840)

* add Tasks, fixes #839

* update urls

* change label

README.md

@@ -1018,6 +1018,7 @@ See https://staticsitegenerators.net and https://www.staticgen.com
   * [Restyaboard](http://restya.com/board/) - Open source Trello-like kanban board. ([Demo](http://restya.com/board/demo.html), [Source Code](https://github.com/RestyaPlatform/board)) `OSLv3` `PHP`
   * [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` `PHP`
   * [Taskfreak](http://www.taskfreak.com/original) - A simple but efficient web based task manager written in PHP. ([Demo](http://demo.taskfreak.com/)) `GPLv3` `PHP`
+  * [Tasks](https://projects.miguelpiedrafita.com/Tasks/) - Simple tasks & notes manager written in PHP, jQuery and Bootstrap using a custom flat file database. ([Demo](https://demo.miguelpiedrafita.com/tasks/), ([Source Code](https://github.com/m1guelpiedrafita/tasks)) `MPLv2` `PHP`
   * [Tasks](https://github.com/thewhitetulip/Tasks) - Kanban based to-do list manager written in Go. `MIT` `Go`
   * [tasks.php](https://github.com/RaymiiOrg/tasks.php) - A simple task/todo list manager. `MIT` `PHP`
   * [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++`