add nerdtree to vim and give it keybinding

.config/nvim/init.vim

@@ -6,6 +6,10 @@ call plug#begin('~/.local/share/nvim/plugged')
 Plug 'tpope/vim-sensible'
 Plug 'tpope/vim-commentary'
 
+" Ecosystem
+" Plug 'tpope/vim-fugitive' - Will have to take a closer look some other time
+Plug 'scrooloose/nerdtree'
+
 " Language Integration
 Plug 'stephpy/vim-yaml'
 
@@ -22,8 +26,12 @@ call plug#end()
 " PLUGIN CONFIGURATION
 let g:airline_powerline_fonts=1
 let g:airline_theme='raven'
-let g:airline_extensions = ['keymap', 'netrw', 'po', 'quickfix', 'term', 'whitespace']
 colorscheme allomancer
+
+" disable automatically refreshing the mux statusbar since it breaks tmux
+" prefix highlighting. Instead, when changing vim statusbar just create
+" snapshot with :TmuxlineSnapshot file and stick it into tmux config manually
+let g:airline#extensions#tmuxline#enabled = 0
 " custom preset with left-justified window list
 let g:tmuxline_preset = {
   \'a'       : '#S',
@@ -103,3 +111,6 @@ nnoremap <leader>W :%s/\s\+$//<cr>:let @/=''<CR>
 
 " 'open new tab' with leader-t (opens new buffer and switches to it)
 nnoremap <leader>t <C-w>v<C-w><C-w>
+
+" open NERDtree with leader-e
+nnoremap <leader>e :NERDTreeToggle<CR>