🎉 Release goodshare.js 6.1.0

Add:

• Flipboard (https://flipboard.com);
• Meneame (https://www.meneame.net);
• WeChat (https://wechat.com);

Change:

• Switch StumbleUpon to Mix (https://mix.com);
• Cut Reddit share counter (CORB);
• Cut LinkedIn share counter;
• Cut Xing share counter;
• Cut Pocket share counter;
• Cut Surfingbird share counter;

Delete:

• Google Plus (1, 2);
• StumbleUpon (http://www.stumbleupon.com);