[ImgBot] Optimize images

*Total -- 507.50kb -> 373.56kb (26.39%)

/software_screenshots/device_0.png -- 9.10kb -> 4.01kb (55.9%)
/software_screenshots/alexa_config.png -- 59.67kb -> 26.63kb (55.38%)
/software_screenshots/board_manager.png -- 25.52kb -> 14.09kb (44.76%)
/software_screenshots/arduinoJson.png -- 31.64kb -> 17.55kb (44.53%)
/software_screenshots/ota.png -- 30.75kb -> 17.61kb (42.72%)
/software_screenshots/mqtt.png -- 27.84kb -> 15.97kb (42.64%)
/software_screenshots/config.png -- 96.56kb -> 60.75kb (37.09%)
/web_ui.jpg -- 226.43kb -> 216.95kb (4.18%)

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[ImgBot] Optimize images

Compile errors fix

Encasing webserver 2 functions in alexa if definition for code to compile

*Total -- 275.54kb -> 222.84kb (19.13%)

/data/images/surr.png -- 9.91kb -> 5.20kb (47.56%)
/data/images/atom196.png -- 5.34kb -> 3.80kb (28.89%)
/screenshot_alpha.jpg -- 260.29kb -> 213.85kb (17.84%)

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Adding mDNS ability to the webserver to avoid looking for the ip

Changing Index based selection on solid color pattern for name based …

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/wiring.jpg -- 772.37kb -> 616.97kb (20.12%)

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Added contributors badge

[ImgBot] Optimize images

Improvement suggestions for Readme