Add neo-vim configuration

.config/nvim/plugins/firenvim.vim

@@ -0,0 +1,24 @@
+Plug 'glacambre/firenvim', { 'do': { _ -> firenvim#install(0) } }
+
+let g:firenvim_config = { 
+    \ 'globalSettings': {
+        \ 'alt': 'all',
+    \  },
+    \ 'localSettings': {
+        \ '.*': {
+            \ 'cmdline': 'neovim',
+            \ 'content': 'text',
+            \ 'priority': 0,
+            \ 'selector': 'textarea',
+            \ 'takeover': 'never',
+        \ },
+    \ }
+\ }
+
+let fc = g:firenvim_config['localSettings']
+let fc['https?://github\.com'] = { 'takeover': 'always', 'priority': 1 }
+
+augroup FirenvimOverrides
+    autocmd!
+    autocmd BufEnter github.com_*.txt set filetype=markdown
+augroup END