Adding Zalenium (#1125)

* Adding Zalenium

* Removing duplicated link

and using only "Apache" as license.

README.md

@@ -1053,6 +1053,8 @@ See **[Ticketing](#ticketing)**
   * [RStudio Server](https://www.rstudio.com/products/rstudio/#Server) - Web browser based IDE for R. ([Source Code](https://github.com/rstudio/rstudio/)) `AGPLv3` `Java/C++`
   * [Selenoid](http://aerokube.com/selenoid/latest/) - A lightweight Selenium hub implementation launching browsers within Docker containers. ([Source Code](https://github.com/aerokube/selenoid)) `Apache` `Go`
   * [Wide](https://github.com/b3log/wide) - A Web-based IDE for Teams using Go programming language/Golang. ([Demo](http://wide.b3log.org/signup)) `Apache` `Go`
+  * [Zalenium](https://github.com/zalando/zalenium) - Allows anyone to have a disposable and flexible Docker-based Selenium Grid infrastructure featuring video recording, live preview and online/offline dashboards. `Apache` `Java/Shell`
+  
 
 
 ### Continuous Integration