Firacode Icons for nerdtree-git-plugin

.vimrc

" using windows character map
" Nerdtree git plugin
let g:NERDTreeGitStatusIndicatorMapCustom = {
               \ 'Modified'  :'☼',
               \ 'Staged'    :'+',
               \ 'Untracked' :'U',
               \ 'Renamed'   :'➡',
               \ 'Unmerged'  :'‗',
               \ 'Deleted'   :'X',
               \ 'Dirty'     :'╳',
               \ 'Ignored'   :'☒',
               \ 'Clean'     :'✓',
               \ 'Unknown'   :'?',
               \ }