handle browser support for React project
check user's browser and redirect to unsupport.html with browser hash if the browser is not in our support list.
Chrome 49 (release: 2016/3/2)
Firefox 50 (release: 2016/11/15)
Safari 10 (release: 2016/9/20)
IE 10 (release: 2012/10/26)
Edge 14 (release: 2016/2/18)
display upgrade and download browser link base on browser type