chore(README): Adding custom lsp doc (LunarVim#61)

rjshrjndrn · web-flow · commit f4b99d1904ab · 2022-10-18T10:07:36.000+05:30
diff --git a/README.md b/README.md
@@ -111,6 +111,29 @@ and press `i` on the Language Server you wish to install
 
 Next you will need to add the server to this list: [servers](https://github.com/LunarVim/nvim-basic-ide/blob/0e65f504f634026f5765ce6a092612d385d6306d/lua/user/lsp/mason.lua#L1)
 
+Note: Builtin LSP doesn't contain all lsps from [nvim-lspconfig](https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#terraform_lsp).
+
+If you want to install any from there, for example terraform_lsp(which adds more functionality than terraformls, like complete resource listing),
+
+1. You can add the lsp name in [mason lsp block](https://github.com/LunarVim/nvim-basic-ide/blob/f03955dc1e5879164f9229d44d98ca81a948cbfb/lua/user/lsp/mason.lua#L1-L10)
+
+```lua
+-- lua/usr/lsp/mason.lua
+local servers = {
+	"sumneko_lua",
+	"cssls",
+	"html",
+	"tsserver",
+	"pyright",
+	"bashls",
+	"jsonls",
+	"yamlls",
+  "terraform_lsp" -- New LSP
+}
+```
+
+2. Manually install the binary of the lsp and put it in your path by downloading the binary or through your package manager. For terraform_lsp [example](https://github.com/juliosueiras/terraform-lsp/releases)
+
 ### Formatters and linters
 
 Make sure the formatter or linter is installed and add it to this setup function: [null-ls](https://github.com/LunarVim/nvim-basic-ide/blob/0e65f504f634026f5765ce6a092612d385d6306d/lua/user/lsp/null-ls.lua#L12)
