I downloaded the slider-entity-row via HACS
By looking at File Editor I can see that the actual .js and other repos are located - /config/www/community/lovelace-slider-entity-row/slider-entity-row.js
Therefore, I went to resources under dashboard and ameneded the resource URL from this - /hacsfiles/lovelace-state-switch/lovelace-slider-entity-row/slider-entity-row.js?hacstag=1448997001721
to the following:
/local/community/lovelace-slider-entity-row…
www/community/
/config/www/community/
no luck… is there a trick here??
nothing works, ive settled on the below for now 
/config/www/community/lovelace-slider-entity-row/slider-entity-row.js?hacstag=1448997001721