supersu for android 4.3

Start with nexus 4 rooting procedure:
1. wget http://techerrata.com/file/twrp2/mako/openrecovery-twrp-2.4.1.0-mako.img
2. fastboot flash recovery openrecovery-twrp-2.4.1.0-mako.img
sending 'recovery' (8294 KB)...
OKAY [ 0.520s]
writing 'recovery'...
OKAY [ 0.424s]
finished. total time: 0.945s
3. Since now when we start recovery mode we should have user friendly tool
4. restart boot loader
fastboot reboot-bootloader
rebooting into bootloader...
OKAY [ 0.001s]
finished. total time: 0.001s
5. download app for android 4.3 http://download.chainfire.eu/344/SuperSU/UPDATE-SuperSU-v1.50.zip
6. copy to mobile sd card or use adb:
adb push 'UPDATE-SuperSU-v1.50.zip' /sdcard/
7.  After you’ve flashed the superuser package, wipe cache and dalvik cache, just to be on the safe side.
8. Restart

After this 8 steps you should have root mode enabled in your nexus.