Updated dev doc in README
Updated dev doc in README

leifdenby/cropit,liddictm/cropit,scottcheng/cropit,impraveen/cropit,tekinaggul/cropit,udayinfy/cropit,agusdiyansyah/cropit,sunkanmi-akintoye/cropit,leifdenby/cropit,tekinaggul/cropit,agusdiyansyah/cropit,sunkanmi-akintoye/cropit,aas395/cropit,liddictm/cropit,aas395/cropit,impraveen/cropit,udayinfy/cropit