Arduino Projects
Digispark Drivers https://github.com/digistump/DigistumpArduino https://github.com/digistump/DigistumpArduino/releases/
Arduino Digispark Board manager: http://digistump.com/package_digistump_index.json
Arduino ESP8266 Board manager http://arduino.esp8266.com/stable/package_esp8266com_index.json
https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls
Digispark https://github.com/digistump/DigistumpArduino/releases http://digistump.com/wiki/digispark/tutorials/connecting
Delete folders ".github" or ".git" from libraries. It´s cause erros in IDE.