* Update README.md
* Spelling fixes
* Update hardware.md
* Adding IoT for beginners episode
* Adding intro video
* Fixing formatting of read more and self study sections.
* Adding instructions for installing the ReSpeaker
* Adding auth to language understanding
* Adding Wio terminal timer setting
* Update config.h
* Fixing links and images
* Increasing version numbers for SD card fix
* Adding SD card requirement
* speech and translations
* Adding more on translations
* All Wio Terminal now working except playing audio
Jim Bennett