[NVIM] Add macdown

nvim/init.vim

@@ -77,6 +77,11 @@ Plug 'lervag/vimtex'
 "Go
 Plug 'fatih/vim-go'
 
+"Macdown (only on macOS)
+if has("macunix")
+    Plug 'hashrocket/vim-macdown'
+endif
+
 call plug#end()
 
 " Run PlugInstall if there are missing plugins
@@ -287,4 +292,7 @@ if has("macunix")
     else
         let g:python3_host_prog="/usr/local/bin/python3"
     endif
+
+    " Open MacDown preview on .md save 
+    autocmd BufWritePost *.md MacDownPreview
 endif