Update Open Classifieds to Yclas and update source code and site links

README.md

@@ -591,7 +591,7 @@ _CMS are a practical way to setup a website with many features. CMS often come w
 - [Microweber](https://microweber.com/) - Drag and Drop CMS and online shop. ([Demo](http://demo.microweber.org/), [Source Code](https://github.com/microweber/microweber)) `Apache-2.0` `PHP`
 - [OpenBazaar](https://www.openbazaar.org) - Decentralized marketplace using cryptocurrency. ([Source Code](https://github.com/openbazaar/openbazaar-go)) `MIT` `Go`
 - [OpenCart](https://www.opencart.com) - Free open source shopping cart solution. ([Source Code](https://github.com/opencart/opencart)) `GPL-3.0` `PHP`
-- [Open Classifieds](http://open-classifieds.com/) - Free open-source, self-hosted CMS for classifieds sites. ([Source Code](https://github.com/open-classifieds/openclassifieds2)) `GPL-3.0` `PHP`
+- [Yclas](https://yclas.com/) - Free open-source, self-hosted CMS for classifieds sites. ([Source Code](https://github.com/yclas/yclas)) `GPL-3.0` `PHP`
 - [Open Source POS](https://www.opensourcepos.org/) - Open Source Point of Sale is a web based point of sale system. ([Source Code](https://github.com/opensourcepos/opensourcepos)) `MIT` `PHP`
 - [OXID eShop](http://oxidforge.org) - OXID eShop is a flexible open source e-commerce software with a wide range of functionalities. ([Demo](http://demoshop.oxid-esales.com/community-edition/), [Source Code](https://github.com/OXID-eSales/oxideshop_ce)) `GPL-3.0` `PHP`
 - [Open Food Network](https://openfoodnetwork.org/) - Online marketplace for local food. It enables a network of independent online food stores that connect farmers and food hubs with individuals and local businesses. ([Source Code](https://github.com/openfoodfoundation/openfoodnetwork)) `AGPL-3.0` `Ruby`