Default Is there a way to get nexus style nav keys ?

Im on Stock 4.4.2 i just got the phone yesterday so would like to use the stock for a while im rooted and have twrp installed.
I just want to know is there a way to get multi task button on the LG G2 ? nav bar instead of the menu ?
all apps have menu buttons and i really don't see the point in the menu button on the phone i would love a nexus esque multi task button.
I don't understand lg's logic G3 with kit kat has it but not G2 kinda annoying.