Images in Arduino tutorials aren't served by Jekyll

[aa-dit-yuh]

All Arduino tutorials reference images from other sites, some of which 404.

[aa-dit-yuh]

@shivangag get this fixed. Use Wayback Machine to download the lost images.

[aa-dit-yuh]

Bug report:

- ./_site/tutorial/arduino/digin/index.html
  *  External link https://lh3.googleusercontent.com/BpMjqw6REklgLwfPRLY729Z_cPhcCTBpHyOH4Wm5VqokjEG3eohQklkZaaMq1h3ahil4vIZkK9KloWs9a2hZUfxEOtp8Vjvkg4w9U8j7BkyhT5bRn1U failed: 404 No error
  *  External link https://lh6.googleusercontent.com/8g5rr0qgEXcj8x2qIuVv-xf3XCaHX0oXHu5fghIGV-ShWzrkeEtS_viDaGakeRZ4AwRdARiTDOJAbGXF-xE96VUVBX5XXeNzZ6iQsnzM31fN2Y6N3BA failed: 404 No error
- ./_site/tutorial/arduino/digout/index.html
  *  External link https://lh3.googleusercontent.com/0yIdsO9e-TNflxjeDdpE0euuWyOJbQomTkE1qvQUeH0vrlq9pjAnHZwQehwimIghHsWPxiC6CW9xX9adagYY3JLrMbW8_CYh3hQ9FmidbxRyKWrA6GQ failed: 404 No error
  *  External link https://lh6.googleusercontent.com/219RGs5leG3skh5O3TwY29xBjb1Ajc0dlu9r7E_1gqVVsUfEGPDqgTPVjeKfn5YpwxIvlOQ_G0cSpwwYP9q3LPhCdJNZjzPek-6PCPVsyxfkjZK6YwI failed: 404 No error
- ./_site/tutorial/arduino/serial/index.html
  *  External link http://robotix.in/tutorials/category/avr/linefollower failed: 404 No error
  *  External link http://robotix.in/tutorials/category/kraig/circuit#197 failed: 404 No error
- ./_site/tutorial/arduino/settingup/index.html
  *  External link http://www.bryonconnolly.com/windows-8-arduino-driver-install failed: response code 0 means something's wrong.
             It's possible libcurl couldn't connect to the server or perhaps the request timed out.
             Sometimes, making too many requests at once also breaks things.
             Either way, the return message (if any) from the server is: Couldn't resolve host name
  *  External link https://lh4.googleusercontent.com/-w-9Ojf173Cyc6ewIHoaaJU6uaGLy9UUlqt3OEKgAKRSpzFfzrlkh3VS1XCEEjufccI0uBKjKGp0Wkc7ZZ3JcoI60cvWpccDDMgu9LNaSWaC2HniJKg failed: 404 No error
  *  External link https://lh5.googleusercontent.com/8bWqCn8OTUSwZ9rUvTkkoa3Dp9K69ftoVchxjw_vM4OkRq8MI4UF7ht-hR4T1pkDg2vNpU8dw-s7jqdeTeDMV5FxZOQS_8Pv1LR1GPVK1Dlisq_jWuM failed: 404 No error
  *  External link https://lh5.googleusercontent.com/xQSyQu_EUUPDPLEdU-6Z-PIdkO5boXMw-Xy-XtVobvxh_YL-wIFDrvHPxtu1TJWMWvB4y5QFBQJt1_tZsoAag-zkMWTKn4rDRK_9U7gr33wQd8mfim0 failed: 404 No error
  *  External link https://lh6.googleusercontent.com/Sf75j7-DGEnoH3QFFav2taK7s-Yc2MxbZMw0kC_YF9rnoaSFYhiKgBA71Tcg-nN_bU33azT4H17lZJ0xAH5vmrJ-eZ9k2SCZb49CdYsatwKLIrTQwsI failed: 404 No error