[ImgBot] Optimize images

*Total -- 231.98kb -> 222.17kb (4.23%)

/assets/icons/apple-touch-icon-60x60.png -- 2.99kb -> 2.45kb (18.13%)
/assets/icons/apple-touch-icon-57x57.png -- 2.77kb -> 2.30kb (16.91%)
/assets/icons/apple-touch-icon-76x76.png -- 3.84kb -> 3.21kb (16.51%)
/assets/icons/apple-touch-icon-72x72.png -- 3.66kb -> 3.09kb (15.75%)
/assets/icons/mstile-150x150.png -- 10.01kb -> 8.72kb (12.83%)
/assets/icons/favicon-32x32.png -- 2.05kb -> 1.80kb (12.07%)
/assets/icons/apple-touch-icon-114x114.png -- 6.63kb -> 5.84kb (11.91%)
/assets/icons/apple-touch-icon-120x120.png -- 7.20kb -> 6.36kb (11.7%)
/assets/icons/apple-touch-icon-144x144.png -- 9.50kb -> 8.63kb (9.18%)
/assets/icons/apple-touch-icon-152x152.png -- 10.40kb -> 9.52kb (8.46%)
/assets/icons/android-chrome-192x192.png -- 19.19kb -> 17.95kb (6.48%)
/assets/icons/apple-touch-icon.png -- 13.49kb -> 12.81kb (5.07%)
/assets/icons/apple-touch-icon-180x180.png -- 13.49kb -> 12.81kb (5.07%)
/src/img/bg/desk1.jpg -- 126.75kb -> 126.69kb (0.05%)

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Author: ImgBotApp