[FEATURE] check for index file

[jcger]

Is your feature request related to a problem? Please describe.
Hi! Great plugin but if I try to load a path that is a folder, for example "../routes/home" it won't load as the exact file path is "../routes/home/index.js"

Describe the solution you'd like
I'd like to add the index route in the paths list with something like

call add(l:paths, simplify(getcwd() . '/' . l:cfile . '/index'))

It works for me but there might be something to take into account which I'm not aware of.

I'd be happy to send a PR but I've got no permissions

[ryanblakeley]

^ that's the exact use case for why i started a search that led me to this plugin