docs: link to npmjs.org in readme
docs: link to npmjs.org in readme

closes #1068

keenwon/connect,RoseTHERESA/connect,chinazhaghai/connect,wghust/connect,behind2/connect,mi2oon/connect,tanveer12332/connect,lian774739140/connect,gtomitsuka/connect,llwanghong/connect,RickyDan/connect,qitianchan/connect,khirayama/connect,mi2oon/connect,liuwei9413/connect,senchalabs/connect,austincitylimits/connect,khalerc/connect,dkfiresky/connect