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Install Custom ROM on LG Nexus 4

Install adb and fastboot on your PC

download TWRP 3.0.2-0 from here https://dl.twrp.me/mako/
download CM 14.1 zip build file from here https://download.cyanogenmod.org/?device=mako
download Google Open G-Apps (arm 7.1 nano) from here http://opengapps.org/

check connected device with
> adb devices

reboot phone with
> adb reboot bootloader

install TWRP using fastboot
reboot phone into bootloader using down volume and power buttons
> fastboot oem unlock
reboot phone and go back into bootloader
> fastboot flash recovery twrp-...-mako.img

go straight from bootloader into recovery

use the TWRP menu to

- wipe System, Data and Dalvik Cache

back to TWRP main menu to

use adb to send build zip file to /sdcard
> adb push cm-13.0-...-mako.zip /sdcard

use adb to send zip file to /sdcard
> adb push open_gapps-arm-6.0-pico-....zip /sdcard

use the TWRP Install menu option to

- install both zip files

reboot and wait five minutes