Remove some dead or abandoned projects.

README.md

 ### Micro Framework Extras
 *Extras related to micro frameworks and routers.*
 
-* [Silex Skeleton](https://github.com/silexphp/Silex-Skeleton) - A project skeleton for Silex.
-* [Silex Web Profiler](https://github.com/silexphp/Silex-WebProfiler) - A web debug toolbar for Silex.
 * [Slim Skeleton](https://github.com/slimphp/Slim-Skeleton) - A skeleton for Slim.
 * [Slim Twig View](https://github.com/slimphp/Slim-Views) - Integrate Twig into Slim.
 * [Slim PHP View](https://github.com/slimphp/PHP-View) - A simple PHP renderer for Slim.
 ### Templating
 *Libraries and tools for templating and lexing.*
 
-* [Aura.View](https://github.com/auraphp/Aura.View) - Provides TemplateView and TwoStepView using PHP as the tempting language, with support for partials, sections, and helpers.
-* [Foil](https://github.com/FoilPHP/Foil) - Another native PHP templating library.
 * [MtHaml](https://github.com/arnaud-lb/MtHaml) - A PHP implementation of the HAML template language.
 * [Mustache](https://github.com/bobthecow/mustache.php) - A PHP implementation of the Mustache template language.
 * [PHPTAL](https://phptal.org/) - A PHP implementation of the [TAL](https://en.wikipedia.org/wiki/Template_Attribute_Language) templating language.
 * [Plates](http://platesphp.com/) - A native PHP templating library.
 * [Smarty](https://www.smarty.net/) - A template engine to complement PHP.
 * [Twig](https://twig.symfony.com/) - A comprehensive templating language.
-* [Tale Jade](https://github.com/Talesoft/tale-jade) - A PHP implementation of the Jade template language.
 
 ### Static Site Generators
 *Tools for pre-processing content to generate web pages.*
 * [Expressive](https://zendframework.github.io/zend-expressive/) - PSR-7 Middleware framework from Zend.
 * [PSR7-Middlewares](https://github.com/oscarotero/psr7-middlewares) - Inspiring collection of handy middlewares.
 * [Relay](https://github.com/relayphp/Relay.Relay) - A PHP 5.5 PSR-7 middleware dispatcher.
-* [Stack](https://github.com/stackphp) - A library of stackable middleware for Silex/Symfony.
+* [Stack](https://github.com/stackphp) - A library of stackable middleware for Symfony.
 * [zend-stratigility](https://github.com/zendframework/zend-stratigility) - Middleware for PHP built on top of PSR-7.
 
 ### URL
 * [PHP Brew](https://github.com/phpbrew/phpbrew) - A PHP version manager and installer.
 * [PHP Build](https://github.com/php-build/php-build) - Another PHP version installer.
 * [PHP OSX](https://php-osx.liip.ch/) - A PHP installer for OSX.
-* [VirtPHP](http://virtphp.org/) - A tool for creating and managing isolated PHP environments.
 
 ### Development Environment
 *Software and tools for creating a sandboxed development environment.*
 
 * [Ansible](https://www.ansible.com/) - A radically simple orchestration framework.
-* [Phansible](https://phansible.com/) - A web tool for building PHP development virtual machines with Ansible.
-* [Protobox](https://www.getprotobox.com/) - Another web tool for building PHP development virtual machines.
-* [PuPHPet](https://puphpet.com/) - A web tool for building PHP development virtual machines.
 * [Puppet](https://puppet.com/) - A server automation framework and application.
 * [Vagrant](https://www.vagrantup.com/) - A portable development environment utility.
 * [Docker](https://www.docker.com/) - A containerization platform.
 ### Text Editors and IDEs
 *Text Editors and Integrated Development Environments (IDE) with support for PHP.*
 
-* [Atom](https://atom.io/) - A hackable text editor.
 * [Atom IDE](https://ide.atom.io/) - An IDE extension for Atom.
 * [Eclipse for PHP Developers](https://www.eclipse.org/downloads/) - A PHP IDE based on the Eclipse platform.
 * [Netbeans](https://netbeans.org) - An IDE with support for PHP and HTML5.