docs(clojure): update clojure guide

docs/_posts/2020-10-07-use-vim-as-a-clojure-ide.md

@@ -19,6 +19,9 @@ Each of the following sections will be covered:
 
 - [Enable language layer](#enable-language-layer)
 - [code completion](#code-completion)
+- [Language server](#language-server)
+  - [neovim(`>=0.5.0`)](#neovim050)
+  - [vim or neovim(`<0.5.0`)](#vim-or-neovim050)
 - [alternate file jumping](#alternate-file-jumping)
 - [code running](#code-running)
 - [REPL support](#repl-support)
@@ -46,6 +49,50 @@ for more info, you can read the [lang#clojure](../layers/lang/clojure/) layer do
 By default the autocomplete layer has been enabled, so after loading `lang#clojure` layer, the code completion
 for clojure language should work well.
 
+### Language server
+
+There are two ways to configure the clojure language server protocol.
+
+#### neovim(`>=0.5.0`)
+
+If you are using `nvim(>=0.5.0)`. You need to use `enabled_clients` to specific the language servers.
+for example:
+
+```toml
+[[layers]]
+    name = 'lsp'
+    enabled_clients = ['clojure_lsp']
+```
+
+To override the command of client, you may need to use `override_client_cmds` option:
+
+```toml
+[[layers]]
+  name = "lsp"
+  enabled_clients = ['clojure_lsp']
+  [layers.override_client_cmds]
+    clojure_lsp = ['clojure-lsp']
+```
+
+You need to install [`clojure-lsp`](https://clojure-lsp.io/installation/).
+
+```
+scoop install clojure-lsp
+```
+
+#### vim or neovim(`<0.5.0`)
+
+To enable language server protocol support, you may need to enable lsp layer.
+
+```toml
+[[layers]]
+  name = "lsp"
+  filetypes = [
+    "clojure"
+  ]
+  [layers.override_cmd]
+    clojure = ['clojure-lsp']
+```
 
 ### alternate file jumping