LEOXSYS NANO-150N-USB WIFI -id-8179-driver RTL8188EU not stable and working


i am new on kali-linux, install kali-linux on my laptop window 8.1.
I done everything, but unable to install successfully wifi usb driver of LEOXSYS NANO-150N on Kali 3.18.0-amd64.
i am trying this since last 15 days but its not stable and disconnect in second.
My problms is that i spend at least 2 months days and nights to understand to Backtrack and Kali now cant leave this until it will not done.

can anybody help me regarding this issue.