[nvim] Add initial null-ls configuration.

.config/nvim/init.vim

@@ -90,6 +90,14 @@ require'lspconfig'.julials.setup({
     capabilities = capabilities,
 })
 
+-- null-ls
+require("null-ls").setup({
+    sources = {
+        require("null-ls").builtins.diagnostics.shellcheck,
+    },
+})
+
+
 require('gitsigns').setup({
     signs = {
         add = { text = '+'},

.vimrc

@@ -43,6 +43,10 @@ call plug#begin('~/.vim/plugged')
         " Code coverage in sign column
         Plug 'nvim-lua/plenary.nvim'
         Plug 'andythigpen/nvim-coverage'
+
+        " null-ls
+        " Plug 'nvim-lua/plenary.nvim'
+        Plug 'jose-elias-alvarez/null-ls.nvim'
     end
 
 call plug#end()