It could show 4 popular groups in the home page, which could look better
@PitaJ Just wandering whether there is option to choose view engine. Personally , used pug a lot and familar with it.
@PitaJ Could I change it to pug(jade) or ejs?
I failed to figure out what's the extension of tpl under the view folder. What's the view engine? Even I google it , I could not find it. I know pug(jade), ejs ,etc. Anyone told me?