add neovim configuration

.config/nvim/init.vim

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+call plug#begin('~/.config/nvim/autoload/plugged')
+Plug 'junegunn/vim-easy-align'
+Plug 'w0rp/ale'
+Plug 'tpope/vim-rails'
+Plug 'vim-ruby/vim-ruby'
+Plug 'hashivim/vim-terraform'
+Plug 'cespare/vim-toml'
+Plug 'ntpeters/vim-better-whitespace'
+Plug 'pearofducks/ansible-vim'
+Plug 'itchyny/vim-gitbranch'
+Plug 'rust-lang/rust.vim'
+Plug 'airblade/vim-gitgutter'
+Plug 'elixir-editors/vim-elixir'
+Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
+Plug 'junegunn/fzf.vim'
+Plug 'https://tpope.io/vim/fugitive.git'
+Plug 'vim-airline/vim-airline'
+Plug 'vim-airline/vim-airline-themes'
+Plug 'kyazdani42/nvim-web-devicons'
+Plug 'kyazdani42/nvim-tree.lua'
+Plug 'akinsho/nvim-bufferline.lua'
+call plug#end()
+
+set nocompatible
+set history=1000
+set title
+set encoding=utf-8
+set scrolloff=3
+set ttyfast
+set laststatus=2
+set ff=unix
+set number
+set tabstop=2
+set shiftwidth=2
+set softtabstop=2
+set nojoinspaces
+set expandtab
+set listchars=tab:>-,trail:-
+set list
+set noshowmode
+set hlsearch
+set incsearch
+set termguicolors
+set mouse=a
+syntax on
+let mapleader = " "
+
+filetype on
+filetype plugin on
+filetype plugin indent on
+autocmd FileType make set noexpandtab shiftwidth=8 softtabstop=0
+autocmd FileType rust set shiftwidth=4 softtabstop=4 tabstop=4
+autocmd FileType terraform set expandtab
+let g:rustfmt_autosave = 1
+autocmd FileType html set shiftwidth=4 softtabstop=4 tabstop=4
+autocmd FileType javascript set shiftwidth=4 softtabstop=4 tabstop=4
+autocmd FileType htmldjango set shiftwidth=4 softtabstop=4 tabstop=4
+autocmd BufNewFile,BufRead *.tera set syntax=django
+
+" Center screen when scrolling search results
+nmap n nzz
+nmap N Nzz
+
+let g:airline_powerline_fonts=1
+let g:airline_theme='base16_eighties'
+
+set pastetoggle=<F5>
+
+" highlight trailing whitespace
+highlight ExtraWhitespace ctermbg=red guibg=red
+match ExtraWhitespace /\s\+$/
+autocmd BufWinEnter * match ExtraWhitespace /\s\+$/
+autocmd InsertEnter * match ExtraWhitespace /\s\+\%#\@<!$/
+autocmd InsertLeave * match ExtraWhitespace /\s\+$/
+autocmd BufWinLeave * call clearmatches()
+
+let g:ale_linters = {'rust': ['analyzer']}
+let g:ale_cursor_detail = 0
+
+" Start interactive EasyAlign in visual mode (e.g. vipga)
+xmap ga <Plug>(EasyAlign)
+
+" Start interactive EasyAlign for a motion/text object (e.g. gaip)
+nmap ga <Plug>(EasyAlign)
+
+nnoremap <silent><leader>1 :source ~/.config/nvim/init.vim \| :PlugInstall<CR>
+map <Leader>s :StripWhitespace<CR>
+
+nnoremap <leader>g :Rg<CR>
+nnoremap <silent><leader>l :Buffers<CR>
+
+if !has('gui_running')
+  set t_Co=256
+endif
+
+nnoremap <F8> :call SetNewPassword()<CR>
+function! SetNewPassword()
+  let cur_word = expand('<cword>')
+  let cmd = 'pwgen ' . strlen(cur_word) . ' 1'
+  let new_password = system(cmd)[:-2]
+  " Replace current word with a new random password of the same length
+  call setline(line('.'), substitute(getline('.'), cur_word, new_password, ""))
+endfunction
+
+" Relative numbering
+function! NumberToggle()
+  if(&relativenumber == 1)
+    set nornu
+    set number
+  else
+    set rnu
+  endif
+endfunc
+
+" Toggle between normal and relative numbering.
+noremap <F6> :call NumberToggle()<cr>
+
+" File Browser
+nnoremap <C-p> :NvimTreeToggle<CR>
+nnoremap <leader>r :NvimTreeRefresh<CR>
+nnoremap <leader>n :NvimTreeFindFile<CR>
+let g:nvim_tree_auto_close = 1
+let g:nvim_tree_quit_on_open = 1
+let g:nvim_tree_git_hl = 1
+
+lua require"bufferline-init"

.config/nvim/lua/bufferline-init.lua

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+-- Top buffer line
+require'bufferline'.setup({
+  options = {
+    numbers = "ordinal",
+    number_style = "superscript"
+  }
+})
+
+-- These commands will navigate through buffers in order regardless of which mode you are using
+-- e.g. if you change the order of buffers :bnext and :bprevious will not respect the custom ordering
+vim.api.nvim_set_keymap('', '<F2>', ':BufferLineCyclePrev<CR>', {})
+vim.api.nvim_set_keymap('', '<F3>', ':BufferLineCycleNext<CR>', {})
+
+-- These commands will move the current buffer backwards or forwards in the bufferline
+vim.api.nvim_set_keymap('', '<C-F2>', ':BufferLineMovePrev<CR>', {})
+vim.api.nvim_set_keymap('', '<C-F3>', ':BufferLineMoveNext<CR>', {})
+
+-- " These commands will sort buffers by directory, language, or a custom criteria
+-- nnorevim.api.nvim_set_keymap <silent>be :BufferLineSortByExtension<CR>
+-- nnorevim.api.nvim_set_keymap <silent>bd :BufferLineSortByDirectory<CR>
+-- nnorevim.api.nvim_set_keymap <silent><F4> :lua require'bufferline'.sort_buffers_by(function (buf_a, buf_b) return buf_a.id < buf_b.id end)<CR>