Add support for making buffer local options in settings.json

runtime/help/options.md

@@ -131,3 +131,22 @@ in all buffers.
 
 The `colorscheme` option is global only, and the `filetype` option is local only. To
 set an option locally, use `setlocal` instead of `set`.
+
+In the `settings.json` file you can also put set options locally by specifying a glob.
+Here is an example which has `tabstospaces` on for all files except Go files, and
+`tabsize` 4 for all files except Ruby files:
+
+```
+{
+    "*.go": {
+        "tabstospaces": false
+    },
+    "*.rb": {
+        "tabsize": 2
+    }
+    "tabstospaces": true,
+    "tabsize": 4,
+}
+```
+
+As you can see it is quite easy to set options locally using the `settings.json` file.