add vim-go and those setting

.config/nvim/init.vim

@@ -17,6 +17,7 @@ Plug 'vimwiki/vimwiki'
 Plug 'vim-airline/vim-airline'
 Plug 'tpope/vim-commentary'
 Plug 'ap/vim-css-color'
+Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
 call plug#end()
 
 set title
@@ -39,6 +40,7 @@ set noshowcmd
 	set number relativenumber
 " Enable autocompletion:
 	set wildmode=longest,list,full
+	set completeopt=longest,menuone
 " Disables automatic commenting on newline:
 	autocmd FileType * setlocal formatoptions-=c formatoptions-=r formatoptions-=o
 " Perform dot commands over visual blocks:
@@ -154,3 +156,4 @@ nnoremap <leader>h :call ToggleHiddenAll()<CR>
 " So ":vs ;cfz" will expand into ":vs /home/<user>/.config/zsh/.zshrc"
 " if typed fast without the timeout.
 source ~/.config/nvim/shortcuts.vim
+au filetype go inoremap <buffer> . .<C-x><C-o>