Add useTransition hook snippet and update README

Author: alDuncanson

README.md

@@ -12,6 +12,7 @@ React Hooks Snippets is a [Visual Studio Code](https://code.visualstudio.com/) e
 | Prefix  | Snippet |
 | ------------- | ------------- |
 | `ush` | `useState` |
+| `uth` | `useTransitionHook` |
 | `ueh` | `useEffect` |
 | `uleh` | `useLayoutEffect` |
 | `uieh` | `useInsertionEffect` |

snippets/snippets.json

@@ -6,6 +6,13 @@
 		],
 		"description": "React useState() hook"
 	},
+	"useTransition": {
+		"prefix": "uth",
+		"body": [
+			"const [isPending, startTransition] = useTransition();$0"
+		],
+		"description": "React useTransition() hook"
+	},
 	"useEffect": {
 		"prefix": "ueh",
 		"body": [