Getting RSelenium work with Selenium 3 and Firefox

R setup for Selenium 3.R

rm(list=ls())
options(stringsAsFactors = F)

library(RSelenium)

# One can make terminal invisible but initially it helps in detecting any potential problem
# Use proper path for Selenium and geckodriver.exe.
# remember to rename the donwloaded Selenium

sel <- startServer(dir = "C:/Dev/Selenium/", 
                   javaargs = c("-Dwebdriver.gecko.driver=\"C:/Dev/Selenium/geko/geckodriver.exe\""),
                   invisible = F)
                   
remDr <- remoteDriver(remoteServerAddr = "localhost",
                      port = 4444,
                      browserName = "firefox",
                      extraCapabilities = list(marionette = TRUE))
                      
remDr$open()
# test
remDr$navigate("https://www.google.com/")