Importing JSON file format which is actually a plist format:
- go to your home directory cd ~
- cd Library/Application Support/iTerm2/DynamicProfiles
- copy your json file you saves to this DynamicProfiles folder
- cp {backuppath-where-you-exported-in-step1}/itermprofiles.json .
Follow instructions in https://github.com/ryanoasis/vim-devicons