Add Testpiler (#1537)

Author: furnacecreek

README.md

@@ -388,6 +388,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 * [SwiftPlantUML](https://github.com/MarcoEidinger/SwiftPlantUML-Xcode-Extension) - Generate and view class diagrams from Xcode for Swift code. [![Open-Source Software][OSS Icon]](https://github.com/MarcoEidinger/SwiftPlantUML-Xcode-Extension) ![Freeware][Freeware Icon]
 * [SwitchHosts](https://oldj.github.io/SwitchHosts/) - Free and open-source app for hosts management & switching. [![Open-Source Software][OSS Icon]](https://github.com/oldj/SwitchHosts) ![Freeware][Freeware Icon]
 * [SYM](https://github.com/zqqf16/SYM) - GUI Application to symbolicate iOS crash log. [![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]](https://github.com/zqqf16/SYM)
+* [Testpiler](https://furnacecreek.org/testpiler/) - Testpiler is an app that allows you to easily convert unit tests written in Swift from XCTest to the new Swift Testing framework.
 * [TeXstudio](http://www.texstudio.org) - Integrated writing environment for creating LaTeX documents. [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/texstudio/) ![Freeware][Freeware Icon]
 * [Touch Bar Simulator](https://github.com/sindresorhus/touch-bar-simulator) - Use the Touch Bar on any Mac. ![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]
 * [Visual Paradigm](https://www.visual-paradigm.com/) - All-in-one UML, SysML, BPMN modeling platform.