[ImgBot] Optimize images

*Total -- 214.58kb -> 176.15kb (17.91%)

/examples/pages/components/nav/pages/tab-bar/image/taobao-tab-bar/bg-img.png -- 48.79kb -> 24.55kb (49.68%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/cart.jpg -- 3.80kb -> 2.93kb (22.91%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/home.jpg -- 4.15kb -> 3.23kb (22.28%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/user.jpg -- 4.96kb -> 3.86kb (22.26%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/discover.jpg -- 5.37kb -> 4.23kb (21.15%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/category.jpg -- 6.10kb -> 4.85kb (20.52%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/cart-selected.jpg -- 5.52kb -> 4.72kb (14.55%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/user-selected.jpg -- 5.58kb -> 4.77kb (14.46%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/category-selected.jpg -- 7.07kb -> 6.08kb (13.97%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/discover-selected.jpg -- 6.10kb -> 5.30kb (12.98%)
/examples/pages/components/nav/pages/tab-bar/image/jd-tab-bar/home-selected.jpg -- 5.05kb -> 4.42kb (12.64%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/contact.jpg -- 14.21kb -> 13.33kb (6.17%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/my.jpg -- 13.03kb -> 12.29kb (5.68%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/discover.jpg -- 15.42kb -> 14.62kb (5.18%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/weixin.jpg -- 13.14kb -> 12.46kb (5.13%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/contact-selected.jpg -- 14.59kb -> 14.06kb (3.61%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/my-selected.jpg -- 13.22kb -> 12.76kb (3.51%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/weixin-selected.jpg -- 13.10kb -> 12.69kb (3.1%)
/examples/pages/components/nav/pages/tab-bar/image/weixin-tab-bar/discover-selected.jpg -- 15.38kb -> 14.99kb (2.6%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp