Update docs and minor style tweak around config.diagnostics

Author: wbthomason

README.md

@@ -129,6 +129,8 @@ lsp_status.config {
     indicator_ok = 'Ok',
   })
 ```
+- `diagnostics`: Boolean, `true` by default. If `false`, the default statusline component does not
+  display LSP diagnostics.
 
 
 ## Example Use

doc/lsp-status.txt

@@ -119,6 +119,9 @@ config({config})                                   *lsp-status.config()*
                   },• 
                 • `status_symbol` : Symbol to start the statusline segment in
                   `status` . Default: ' 🇻',•
+                • `diagnostics` : Boolean, `true` by default. If `false`, the
+                  default statusline component does not include LSP diagnostic
+                  counts.
 
                 Parameters: ~
                     {config}(required, table) Table of values; keys are as

lua/lsp-status/statusline.lua

@@ -38,7 +38,7 @@ end
 local function get_lsp_statusline(bufnr)
   bufnr = bufnr or 0
   if #vim.lsp.buf_get_clients(bufnr) == 0 then return '' end
-  local buf_diagnostics = (config.diagnostics) and diagnostics(bufnr) or nil
+  local buf_diagnostics = config.diagnostics and diagnostics(bufnr) or nil
   local buf_messages = messages()
   local only_hint = true
   local some_diagnostics = false