Update integration with @PlatformIO

docs/platformio.md

 Installation instructions for using PlatformIO
 =================================================
 
-[PlatformIO](http://platformio.org) is an open source ecosystem for IoT development with cross platform build system, library manager and full support for Espressif ESP32 development. It works on the popular host OS: Mac OS X, Windows,Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard).
-
-- [What is PlatformIO?](http://docs.platformio.org/page/what-is-platformio.html)
-- [PlatformIO IDE](http://platformio.org/platformio-ide)
-- [PlatformIO Core (CLI)](http://docs.platformio.org/page/core.html)
-- [Integration with Cloud and Standalone IDEs](http://docs.platformio.org/page/ide.html) -
-  Cloud9, Codeanywehre, Eclipse Che (Codenvy), Atom, CLion, Eclipse, Emacs, NetBeans, Qt Creator, Sublime Text, VIM and Visual Studio
-- [Project Examples](https://github.com/platformio/platform-espressif32/tree/develop/examples)
-- [Using "Stage" (Git) version of Arduino Core](http://docs.platformio.org/page/platforms/espressif32.html#using-arduino-framework-with-staging-version)
+- [What is PlatformIO?](http://docs.platformio.org/en/latest/what-is-platformio.html?utm_source=github&utm_medium=arduino-esp32)
+- [PlatformIO IDE](http://platformio.org/platformio-ide?utm_source=github&utm_medium=arduino-esp32)
+- [PlatformIO Core](http://docs.platformio.org/en/latest/core.html?utm_source=github&utm_medium=arduino-esp32) (command line tool)
+- [Advanced usage](http://docs.platformio.org/en/latest/platforms/espressif32.html?utm_source=github&utm_medium=arduino-esp32) -
+  custom settings, uploading to SPIFFS, Over-the-Air (OTA), staging version
+- [Integration with Cloud and Standalone IDEs](http://docs.platformio.org/en/latest/ide.html?utm_source=github&utm_medium=arduino-esp32) -
+  Cloud9, Codeanywhere, Eclipse Che (Codenvy), Atom, CLion, Eclipse, Emacs, NetBeans, Qt Creator, Sublime Text, VIM, Visual Studio, and VSCode
+- [Project Examples](http://docs.platformio.org/en/latest/platforms/espressif32.html?utm_source=github&utm_medium=arduino-esp32#examples)